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Date: Wed, 8 Apr 2026 13:07:15 -0700
From: Andrew Morton <akpm@linux-foundation.org>
To: Michal Hocko <mhocko@suse.com>
Cc: Dmitry Ilvokhin <d@ilvokhin.com>, Vlastimil Babka <vbabka@kernel.org>,
 Suren Baghdasaryan <surenb@google.com>, Brendan Jackman
 <jackmanb@google.com>, Johannes Weiner <hannes@cmpxchg.org>, Zi Yan
 <ziy@nvidia.com>, linux-mm@kvack.org, linux-kernel@vger.kernel.org,
 kernel-team@meta.com, Steven Rostedt <rostedt@goodmis.org>
Subject: Re: [RESEND PATCH v2 0/8] mm: use spinlock guards for zone lock
Message-Id: <20260408130715.d6772b9675b0182bac9fe427@linux-foundation.org>
In-Reply-To: <adaFaMGbndSSMaZn@tiehlicka>
References: <cover.1775654118.git.d@ilvokhin.com>
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On Wed, 8 Apr 2026 18:42:16 +0200 Michal Hocko <mhocko@suse.com> wrote:

> > Dmitry Ilvokhin (8):
> >   mm: use zone lock guard in reserve_highatomic_pageblock()
> >   mm: use zone lock guard in unset_migratetype_isolate()
> >   mm: use zone lock guard in unreserve_highatomic_pageblock()
> >   mm: use zone lock guard in set_migratetype_isolate()
> >   mm: use zone lock guard in take_page_off_buddy()
> >   mm: use zone lock guard in put_page_back_buddy()
> >   mm: use zone lock guard in free_pcppages_bulk()
> >   mm: use zone lock guard in __offline_isolated_pages()
> > 
> >  mm/page_alloc.c     | 53 ++++++++++++-----------------------
> >  mm/page_isolation.c | 67 +++++++++++++++++++--------------------------
> >  2 files changed, 45 insertions(+), 75 deletions(-)
> 
> I like the resulting code. For the whole series.
> Acked-by: Michal Hocko <mhocko@suse.com>

Thanks.

As I mentioned previously, the outcome here hinges on how the
developers who work on this code feel about using guard().  Most of
them are in hiding at present but that's OK - it's post -rc1 fun.