cgroup/cpuset: Skip hardwall ancestor scan in cpuset v2 in cpuset_current_node_allowed()

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Cgroup v2 doesn't have the concept of memory hardwall, only top_cpuset
has CS_MEM_EXCLUSIVE/CS_MEM_HARDWALL flags, nearest_hardwall_ancestor
always returns top_cpuset with all nodes set, so no need to acquire
callback_lock and scan up cpuset.

Suggested-by: Michal Koutný <mkoutny@suse.com>
Signed-off-by: Chen Wandun <chenwandun@lixiang.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

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Chen Wandun 2026-05-11 16:18:38 +08:00 • committed by Tejun Heo

parent c69e4b0213

commit be2689c9ed

1 changed files with 3 additions and 0 deletions

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kernel/cgroup/cpuset.c

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