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bitmap: use for_each_set_bit() 

Replace open-coded loop with for_each_set_bit().

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Akinobu Mita 2010-03-05 13:43:18 -08:00 committed by Linus Torvalds
parent 9a86e2bad0
commit 08564fb7ab
1 changed files with 4 additions and 9 deletions
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13
lib/bitmap.c
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@ -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);