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Date: Thu, 15 Jan 2026 21:59:48 -1000
From: Tejun Heo <tj@kernel.org>
To: Yury Norov <ynorov@nvidia.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
	Alistair Popple <apopple@nvidia.com>,
	Byungchul Park <byungchul@sk.com>,
	David Hildenbrand <david@kernel.org>,
	Gregory Price <gourry@gourry.net>,
	Johannes Weiner <hannes@cmpxchg.org>,
	Joshua Hahn <joshua.hahnjy@gmail.com>,
	"Liam R. Howlett" <Liam.Howlett@oracle.com>,
	Lorenzo Stoakes <lorenzo.stoakes@oracle.com>,
	Matthew Brost <matthew.brost@intel.com>,
	Michal Hocko <mhocko@suse.com>,
	Michal =?iso-8859-1?Q?Koutn=FD?= <mkoutny@suse.com>,
	Mike Rapoport <rppt@kernel.org>, Rakie Kim <rakie.kim@sk.com>,
	Suren Baghdasaryan <surenb@google.com>,
	Vlastimil Babka <vbabka@suse.cz>, Waiman Long <longman@redhat.com>,
	Ying Huang <ying.huang@linux.alibaba.com>, Zi Yan <ziy@nvidia.com>,
	cgroups@vger.kernel.org, Yury Norov <yury.norov@gmail.com>,
	Rasmus Villemoes <linux@rasmusvillemoes.dk>, linux-mm@kvack.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH 3/3] cgroup: use nodes_and() output where appropriate
Message-ID: <aWnv9H2Vn6Gqmp5C@slm.duckdns.org>
References: <20260114172217.861204-1-ynorov@nvidia.com>
 <20260114172217.861204-4-ynorov@nvidia.com>
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In-Reply-To: <20260114172217.861204-4-ynorov@nvidia.com>

On Wed, Jan 14, 2026 at 12:22:15PM -0500, Yury Norov wrote:
> Now that nodes_and() returns true if the result nodemask is not empty,
> drop useless nodes_intersects() in guarantee_online_mems() and
> nodes_empty() in update_nodemasks_hier(), which both are O(N).
> 
> Signed-off-by: Yury Norov <ynorov@nvidia.com>

Acked-by: Tejun Heo <tj@kernel.org>

Please feel free to route together with the prerequisite patches.

Thanks.

-- 
tejun