linux-kernel - [PATCH -next 02/11] cpuset: remove unused assignment to trialcs->partition_root

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Message-Id: <20250917060454.2885698-3-chenridong@huaweicloud.com>
Date: Wed, 17 Sep 2025 06:04:45 +0000
From: Chen Ridong <chenridong@...weicloud.com>
To: longman@...hat.com,
	tj@...nel.org,
	hannes@...xchg.org,
	mkoutny@...e.com
Cc: cgroups@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	lujialin4@...wei.com,
	chenridong@...wei.com
Subject: [PATCH -next 02/11] cpuset: remove unused assignment to trialcs->partition_root_state

From: Chen Ridong <chenridong@...wei.com>

The trialcs->partition_root_state field is not used during the
configuration of 'cpuset.cpus' or 'cpuset.cpus.exclusive'. Therefore,
the assignment of values to this field can be safely removed.

Signed-off-by: Chen Ridong <chenridong@...wei.com>
Reviewed-by: Waiman Long <longman@...hat.com>
---
 kernel/cgroup/cpuset.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/kernel/cgroup/cpuset.c b/kernel/cgroup/cpuset.c
index 819adf4fd591..5452c3702b80 100644
--- a/kernel/cgroup/cpuset.c
+++ b/kernel/cgroup/cpuset.c
@@ -2363,7 +2363,6 @@ static int update_cpumask(struct cpuset *cs, struct cpuset *trialcs,
 		 * trialcs->effective_xcpus is used as a temporary cpumask
 		 * for checking validity of the partition root.
 		 */
-		trialcs->partition_root_state = PRS_MEMBER;
 		if (!cpumask_empty(trialcs->exclusive_cpus) || is_partition_valid(cs))
 			compute_effective_exclusive_cpumask(trialcs, NULL, cs);
 	}
@@ -2497,7 +2496,6 @@ static int update_exclusive_cpumask(struct cpuset *cs, struct cpuset *trialcs,
 		return 0;
 
 	if (*buf) {
-		trialcs->partition_root_state = PRS_MEMBER;
 		/*
 		 * Reject the change if there is exclusive CPUs conflict with
 		 * the siblings.
-- 
2.34.1