[PATCH 4/9] bitmap: Use for_each_set_bit

From: Akinobu Mita
Date: Mon Feb 01 2010 - 10:14:46 EST


v2: rename for_each_bit to for_each_set_bit

Signed-off-by: Akinobu Mita <akinobu.mita@xxxxxxxxx>
---
lib/bitmap.c | 13 ++++---------
1 files changed, 4 insertions(+), 9 deletions(-)

diff --git a/lib/bitmap.c b/lib/bitmap.c
index 11bf497..5f18bb0 100644
--- a/lib/bitmap.c
+++ b/lib/bitmap.c
@@ -733,10 +733,9 @@ void bitmap_remap(unsigned long *dst, const unsigned long *src,
bitmap_zero(dst, bits);

w = bitmap_weight(new, bits);
- for (oldbit = find_first_bit(src, bits);
- oldbit < bits;
- oldbit = find_next_bit(src, bits, oldbit + 1)) {
+ for_each_set_bit(oldbit, src, bits) {
int n = bitmap_pos_to_ord(old, oldbit, bits);
+
if (n < 0 || w == 0)
set_bit(oldbit, dst); /* identity map */
else
@@ -903,9 +902,7 @@ void bitmap_onto(unsigned long *dst, const unsigned long *orig,
*/

m = 0;
- for (n = find_first_bit(relmap, bits);
- n < bits;
- n = find_next_bit(relmap, bits, n + 1)) {
+ for_each_set_bit(n, relmap, bits) {
/* m == bitmap_pos_to_ord(relmap, n, bits) */
if (test_bit(m, orig))
set_bit(n, dst);
@@ -934,9 +931,7 @@ void bitmap_fold(unsigned long *dst, const unsigned long *orig,
return;
bitmap_zero(dst, bits);

- for (oldbit = find_first_bit(orig, bits);
- oldbit < bits;
- oldbit = find_next_bit(orig, bits, oldbit + 1))
+ for_each_set_bit(oldbit, orig, bits)
set_bit(oldbit % sz, dst);
}
EXPORT_SYMBOL(bitmap_fold);
--
1.6.0.6

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