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Commit 08564fb7 authored by Akinobu Mita's avatar Akinobu Mita Committed by Linus Torvalds
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bitmap: use for_each_set_bit() 



Replace open-coded loop with for_each_set_bit().

Signed-off-by: default avatarAkinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 9a86e2ba

lib/bitmap.c

+4 −9
Original line number Diff line number Diff line
@@ -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);