From: Zi Yan <ziy@nvidia.com>
To: SeongJae Park <sj@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>,
David Hildenbrand <david@kernel.org>,
Lorenzo Stoakes <lorenzo.stoakes@oracle.com>,
"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>,
Kefeng Wang <wangkefeng.wang@huawei.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
Ron Economos <re@w6rz.net>
Subject: Re: [PATCH] mm/cma: move put_page_testzero() out of VM_WARN_ON in cma_release()
Date: Tue, 24 Feb 2026 21:21:55 -0500 [thread overview]
Message-ID: <88B98450-B0CE-476D-9E09-98DF6A1F6E3B@nvidia.com> (raw)
In-Reply-To: <20260225022012.62985-1-sj@kernel.org>
On 24 Feb 2026, at 21:20, SeongJae Park wrote:
> On Tue, 24 Feb 2026 18:18:44 -0800 SeongJae Park <sj@kernel.org> wrote:
>
>> On Tue, 24 Feb 2026 16:39:46 -0500 Zi Yan <ziy@nvidia.com> wrote:
>>
>>> When CONFIG_DEBUG_VM is not set, VM_WARN_ON is a NOP. Putting any statement
>>> with side effect inside it is incorrect. Move put_page_testzero() out and
>>> check its return value in VM_WARN_ON. Add __maybe_unused to the return
>>> value for when CONFIG_DEBUG_VM is not set.
>>>
>>> Fixes: 9bda131c6093 ("mm: cma: add cma_alloc_frozen{_compound}()")
>>> Reported-by: Ron Economos <re@w6rz.net>
>>> Closes: https://lore.kernel.org/all/1b17c38f-30d3-4bb4-a7e1-e74b19ada885@w6rz.net/
>
> I forgot asking this, sorry.
>
> Should we Cc stable@ ?
The commit is just in 7.0-rc1. Nothing is needed for stable.
Best Regards,
Yan, Zi
next prev parent reply other threads:[~2026-02-25 2:22 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-24 21:39 Zi Yan
2026-02-25 2:18 ` SeongJae Park
2026-02-25 2:20 ` SeongJae Park
2026-02-25 2:21 ` Zi Yan [this message]
2026-02-25 2:41 ` SeongJae Park
2026-02-25 2:19 ` Zi Yan
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