2258 static int update_cpumask(struct cpuset *cs, struct cpuset *trialcs,  in update_cpumask()  argument
2279 		cpumask_clear(trialcs->cpus_allowed);  in update_cpumask()
2280 		if (cpumask_empty(trialcs->exclusive_cpus))  in update_cpumask()
2281 			cpumask_clear(trialcs->effective_xcpus);  in update_cpumask()
2283 		retval = cpulist_parse(buf, trialcs->cpus_allowed);  in update_cpumask()
2287 		if (!cpumask_subset(trialcs->cpus_allowed,  in update_cpumask()
2297 		trialcs->partition_root_state = PRS_MEMBER;  in update_cpumask()
2298 		if (!cpumask_empty(trialcs->exclusive_cpus) || is_partition_valid(cs))  in update_cpumask()
2299 			compute_effective_exclusive_cpumask(trialcs, NULL, cs);  in update_cpumask()
2303 	if (cpumask_equal(cs->cpus_allowed, trialcs->cpus_allowed))  in update_cpumask()
2311 		    cpumask_empty(trialcs->effective_xcpus)) {  in update_cpumask()
2314 		} else if (prstate_housekeeping_conflict(old_prs, trialcs->effective_xcpus)) {  in update_cpumask()
2317 		} else if (tasks_nocpu_error(parent, cs, trialcs->effective_xcpus)) {  in update_cpumask()
2327 	force = !cpumask_equal(cs->effective_xcpus, trialcs->effective_xcpus);  in update_cpumask()
2329 	retval = validate_change(cs, trialcs);  in update_cpumask()
2345 			struct cpumask *xcpus = user_xcpus(trialcs);  in update_cpumask()
2363 		struct cpumask *xcpus = trialcs->effective_xcpus;  in update_cpumask()
2366 			xcpus = trialcs->cpus_allowed;  in update_cpumask()
2382 	cpumask_copy(cs->cpus_allowed, trialcs->cpus_allowed);  in update_cpumask()
2383 	cpumask_copy(cs->effective_xcpus, trialcs->effective_xcpus);  in update_cpumask()
2407 static int update_exclusive_cpumask(struct cpuset *cs, struct cpuset *trialcs,  in update_exclusive_cpumask()  argument
2418 		cpumask_clear(trialcs->exclusive_cpus);  in update_exclusive_cpumask()
2419 		cpumask_clear(trialcs->effective_xcpus);  in update_exclusive_cpumask()
2421 		retval = cpulist_parse(buf, trialcs->exclusive_cpus);  in update_exclusive_cpumask()
2427 	if (cpumask_equal(cs->exclusive_cpus, trialcs->exclusive_cpus))  in update_exclusive_cpumask()
2431 		trialcs->partition_root_state = PRS_MEMBER;  in update_exclusive_cpumask()
2436 		if (compute_effective_exclusive_cpumask(trialcs, NULL, cs))  in update_exclusive_cpumask()
2444 	force = !cpumask_equal(cs->effective_xcpus, trialcs->effective_xcpus);  in update_exclusive_cpumask()
2446 	retval = validate_change(cs, trialcs);  in update_exclusive_cpumask()
2454 		if (cpumask_empty(trialcs->effective_xcpus)) {  in update_exclusive_cpumask()
2457 		} else if (prstate_housekeeping_conflict(old_prs, trialcs->effective_xcpus)) {  in update_exclusive_cpumask()
2460 		} else if (tasks_nocpu_error(parent, cs, trialcs->effective_xcpus)) {  in update_exclusive_cpumask()
2469 				remote_cpus_update(cs, trialcs->exclusive_cpus,  in update_exclusive_cpumask()
2470 						   trialcs->effective_xcpus, &tmp);  in update_exclusive_cpumask()
2476 						trialcs->effective_xcpus, &tmp);  in update_exclusive_cpumask()
2480 	cpumask_copy(cs->exclusive_cpus, trialcs->exclusive_cpus);  in update_exclusive_cpumask()
2481 	cpumask_copy(cs->effective_xcpus, trialcs->effective_xcpus);  in update_exclusive_cpumask()
2712 static int update_nodemask(struct cpuset *cs, struct cpuset *trialcs,  in update_nodemask()  argument
2733 		nodes_clear(trialcs->mems_allowed);  in update_nodemask()
2735 		retval = nodelist_parse(buf, trialcs->mems_allowed);  in update_nodemask()
2739 		if (!nodes_subset(trialcs->mems_allowed,  in update_nodemask()
2746 	if (nodes_equal(cs->mems_allowed, trialcs->mems_allowed)) {  in update_nodemask()
2750 	retval = validate_change(cs, trialcs);  in update_nodemask()
2754 	check_insane_mems_config(&trialcs->mems_allowed);  in update_nodemask()
2757 	cs->mems_allowed = trialcs->mems_allowed;  in update_nodemask()
2761 	update_nodemasks_hier(cs, &trialcs->mems_allowed);  in update_nodemask()
2789 	struct cpuset *trialcs;  in cpuset_update_flag()  local
2794 	trialcs = alloc_trial_cpuset(cs);  in cpuset_update_flag()
2795 	if (!trialcs)  in cpuset_update_flag()
2799 		set_bit(bit, &trialcs->flags);  in cpuset_update_flag()
2801 		clear_bit(bit, &trialcs->flags);  in cpuset_update_flag()
2803 	err = validate_change(cs, trialcs);  in cpuset_update_flag()
2808 				is_sched_load_balance(trialcs));  in cpuset_update_flag()
2810 	spread_flag_changed = ((is_spread_slab(cs) != is_spread_slab(trialcs))  in cpuset_update_flag()
2811 			|| (is_spread_page(cs) != is_spread_page(trialcs)));  in cpuset_update_flag()
2814 	cs->flags = trialcs->flags;  in cpuset_update_flag()
2817 	if (!cpumask_empty(trialcs->cpus_allowed) && balance_flag_changed) {  in cpuset_update_flag()
2827 	free_cpuset(trialcs);  in cpuset_update_flag()
3188 	struct cpuset *trialcs;  in cpuset_write_resmask()  local
3197 	trialcs = alloc_trial_cpuset(cs);  in cpuset_write_resmask()
3198 	if (!trialcs) {  in cpuset_write_resmask()
3205 		retval = update_cpumask(cs, trialcs, buf);  in cpuset_write_resmask()
3208 		retval = update_exclusive_cpumask(cs, trialcs, buf);  in cpuset_write_resmask()
3211 		retval = update_nodemask(cs, trialcs, buf);  in cpuset_write_resmask()
3218 	free_cpuset(trialcs);  in cpuset_write_resmask()