771  * When merge_across_nodes knob is set to 1, there are only two rb-trees for
3526 	unsigned long knob;  in merge_across_nodes_store()  local
3528 	err = kstrtoul(buf, 10, &knob);  in merge_across_nodes_store()
3531 	if (knob > 1)  in merge_across_nodes_store()
3536 	if (ksm_merge_across_nodes != knob) {  in merge_across_nodes_store()
3561 			ksm_merge_across_nodes = knob;  in merge_across_nodes_store()
3562 			ksm_nr_node_ids = knob ? 1 : nr_node_ids;  in merge_across_nodes_store()
3605 	int knob;  in max_page_sharing_store()  local
3607 	err = kstrtoint(buf, 10, &knob);  in max_page_sharing_store()
3615 	if (knob < 2)  in max_page_sharing_store()
3618 	if (READ_ONCE(ksm_max_page_sharing) == knob)  in max_page_sharing_store()
3623 	if (ksm_max_page_sharing != knob) {  in max_page_sharing_store()
3627 			ksm_max_page_sharing = knob;  in max_page_sharing_store()