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Date: Thu, 9 Apr 2026 08:47:15 -0700
From: Andrew Morton <akpm@linux-foundation.org>
To: Breno Leitao <leitao@debian.org>
Cc: David Hildenbrand <david@kernel.org>, Lorenzo Stoakes <ljs@kernel.org>,
 "Liam R. Howlett" <Liam.Howlett@oracle.com>, Vlastimil Babka
 <vbabka@kernel.org>, Mike Rapoport <rppt@kernel.org>, Suren Baghdasaryan
 <surenb@google.com>, Michal Hocko <mhocko@suse.com>, Christoph Lameter
 <cl@linux.com>, linux-mm@kvack.org, linux-kernel@vger.kernel.org,
 kas@kernel.org, shakeel.butt@linux.dev, usama.arif@linux.dev,
 kernel-team@meta.com
Subject: Re: [PATCH v2] mm/vmstat: fix vmstat_shepherd double-scheduling
 vmstat_update
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In-Reply-To: <20260409-vmstat-v2-1-e9d9a6db08ad@debian.org>
References: <20260409-vmstat-v2-1-e9d9a6db08ad@debian.org>
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On Thu, 09 Apr 2026 05:26:36 -0700 Breno Leitao <leitao@debian.org> wrote:

> vmstat_shepherd uses delayed_work_pending() to check whether
> vmstat_update is already scheduled for a given CPU before queuing it.
> However, delayed_work_pending() only tests WORK_STRUCT_PENDING_BIT,
> which is cleared the moment a worker thread picks up the work to
> execute it.

Thanks, I tentatively added this to the 7.1-rc1 queue, to upstream ~2
weeks hence.