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Date: Thu, 9 Apr 2026 11:36:43 +0000
From: Dmitry Ilvokhin <d@ilvokhin.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Michal Hocko <mhocko@suse.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
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References: <cover.1775654118.git.d@ilvokhin.com>
 <adaFaMGbndSSMaZn@tiehlicka>
 <20260408130715.d6772b9675b0182bac9fe427@linux-foundation.org>
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In-Reply-To: <20260408130715.d6772b9675b0182bac9fe427@linux-foundation.org>

On Wed, Apr 08, 2026 at 01:07:15PM -0700, Andrew Morton wrote:
> 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.
> 

Thanks, Andrew.

Understood. I'll wait for feedback from more folks. Hopefully they
reappear soon after the -rc1 dust settles.