From: "Michal Koutný" <mkoutny@suse.com>
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>, Mike Rapoport <rppt@kernel.org>,
Rakie Kim <rakie.kim@sk.com>,
Suren Baghdasaryan <surenb@google.com>,
Tejun Heo <tj@kernel.org>, 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
Date: Wed, 14 Jan 2026 23:13:14 +0100 [thread overview]
Message-ID: <qhobdtdwtkux7n5r3b64itvpe7zchm3ovpfmazim3v5ilg34kr@5o5wu3chh5b6> (raw)
In-Reply-To: <20260114172217.861204-4-ynorov@nvidia.com>
On Wed, Jan 14, 2026 at 12:22:15PM -0500, Yury Norov <ynorov@nvidia.com> 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>
> ---
> kernel/cgroup/cpuset.c | 7 +++----
> 1 file changed, 3 insertions(+), 4 deletions(-)
Nice improvement.
Reviewed-by: Michal Koutný <mkoutny@suse.com>
next prev parent reply other threads:[~2026-01-14 22:13 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-14 17:22 [PATCH 0/3] nodemask: align nodes_and{,not} with underlying bitmap ops Yury Norov
2026-01-14 17:22 ` [PATCH 1/3] nodemask: propagate boolean for nodes_and{,not} Yury Norov
2026-01-14 17:56 ` Gregory Price
2026-01-14 17:22 ` [PATCH 2/3] mm: use nodes_and() return value to simplify client code Yury Norov
2026-01-14 17:56 ` Gregory Price
2026-01-14 17:22 ` [PATCH 3/3] cgroup: use nodes_and() output where appropriate Yury Norov
2026-01-14 18:00 ` Gregory Price
2026-01-14 22:13 ` Michal Koutný [this message]
2026-01-14 22:33 ` Waiman Long
2026-01-15 0:52 ` Chen Ridong
2026-01-14 19:37 ` [PATCH 0/3] nodemask: align nodes_and{,not} with underlying bitmap ops Joshua Hahn
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