The patch titled
hpfs: use hweight32
has been added to the -mm tree. Its filename is
hpfs-use-hweight32.patch
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------------------------------------------------------
Subject: hpfs: use hweight32
From: Akinobu Mita <akinobu.mita@xxxxxxxxx>
Use hweight32 instead of counting for each bit
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 | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)
diff -puN fs/hpfs/super.c~hpfs-use-hweight32 fs/hpfs/super.c
--- a/fs/hpfs/super.c~hpfs-use-hweight32
+++ a/fs/hpfs/super.c
@@ -119,11 +119,8 @@ unsigned hpfs_count_one_bitmap(struct su
unsigned i, count;
if (!(bits = hpfs_map_4sectors(s, secno, &qbh, 4))) return 0;
count = 0;
- for (i = 0; i < 2048 / sizeof(unsigned); i++) {
- unsigned b;
- if (!bits[i]) continue;
- for (b = bits[i]; b; b>>=1) count += b & 1;
- }
+ for (i = 0; i < 2048 / sizeof(unsigned); i++)
+ count += hweight32(bits[i]);
hpfs_brelse4(&qbh);
return count;
}
_
Patches currently in -mm which might be from akinobu.mita@xxxxxxxxx are
linux-next.patch
hpfs-use-hweight32.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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