block/drbd/drbd_bitmap.c

323 static void __bm_unmap(unsigned long *p_addr)
325 	kunmap_atomic(p_addr);
328 static void bm_unmap(unsigned long *p_addr)
330 	return __bm_unmap(p_addr);
485 	unsigned long *p_addr, *bm;
497 	p_addr = bm_map_pidx(b, b->bm_number_of_pages - 1);
498 	bm = p_addr + (tmp/BITS_PER_LONG);
509 	if (BITS_PER_LONG == 32 && ((bm - p_addr) & 1) == 1) {
515 	bm_unmap(p_addr);
522 	unsigned long *p_addr, *bm;
533 	p_addr = bm_map_pidx(b, b->bm_number_of_pages - 1);
534 	bm = p_addr + (tmp/BITS_PER_LONG);
544 	if (BITS_PER_LONG == 32 && ((bm - p_addr) & 1) == 1) {
549 	bm_unmap(p_addr);
556 	unsigned long *p_addr;
563 		p_addr = __bm_map_pidx(b, idx);
564 		bits += bitmap_weight(p_addr, BITS_PER_PAGE);
565 		__bm_unmap(p_addr);
570 	p_addr = __bm_map_pidx(b, idx);
571 	bits += bitmap_weight(p_addr, last_word * BITS_PER_LONG);
572 	p_addr[last_word] &= cpu_to_lel(mask);
573 	bits += hweight_long(p_addr[last_word]);
576 		p_addr[last_word+1] = 0;
577 	__bm_unmap(p_addr);
584 	unsigned long *p_addr, *bm;
598 		p_addr = bm_map_pidx(b, idx);
599 		bm = p_addr + MLPP(offset);
600 		if (bm+do_now > p_addr + LWPP) {
601 			pr_alert("BUG BUG BUG! p_addr:%p bm:%p do_now:%d\n",
602 			       p_addr, bm, (int)do_now);
605 		bm_unmap(p_addr);
812 	unsigned long *p_addr, *bm;
832 		p_addr = bm_map_pidx(b, idx);
833 		bm = p_addr + MLPP(offset);
841 		bm_unmap(p_addr);
861 	unsigned long *p_addr, *bm;
882 			p_addr = bm_map_pidx(b, bm_word_to_page_idx(b, offset));
883 			bm = p_addr + MLPP(offset);
887 			bm_unmap(p_addr);
1296 	unsigned long *p_addr;
1308 			p_addr = __bm_map_pidx(b, bm_bit_to_page_idx(b, bm_fo));
1311 				i = find_next_zero_bit_le(p_addr,
1314 				i = find_next_bit_le(p_addr,
1317 			__bm_unmap(p_addr);
1390 	unsigned long *p_addr = NULL;
1404 			if (p_addr)
1405 				__bm_unmap(p_addr);
1412 			p_addr = __bm_map_pidx(b, page_nr);
1416 			c += (0 == __test_and_set_bit_le(bitnr & BITS_PER_PAGE_MASK, p_addr));
1418 			c -= (0 != __test_and_clear_bit_le(bitnr & BITS_PER_PAGE_MASK, p_addr));
1420 	if (p_addr)
1421 		__bm_unmap(p_addr);
1585 	unsigned long *p_addr;
1597 		p_addr = bm_map_pidx(b, bm_bit_to_page_idx(b, bitnr));
1598 		i = test_bit_le(bitnr & BITS_PER_PAGE_MASK, p_addr) ? 1 : 0;
1599 		bm_unmap(p_addr);
1616 	unsigned long *p_addr = NULL;
1637 			if (p_addr)
1638 				bm_unmap(p_addr);
1639 			p_addr = bm_map_pidx(b, idx);
1642 			c += (0 != test_bit_le(bitnr - (page_nr << (PAGE_SHIFT+3)), p_addr));
1646 	if (p_addr)
1647 		bm_unmap(p_addr);
1672 	unsigned long *p_addr, *bm;
1688 		p_addr = bm_map_pidx(b, bm_word_to_page_idx(b, s));
1689 		bm = p_addr + MLPP(s);
1691 		bm_unmap(p_addr);