From: SeongJae Park <sj@kernel.org>
To: Dmitry Ilvokhin <d@ilvokhin.com>
Cc: SeongJae Park <sj@kernel.org>,
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@suse.cz>, Mike Rapoport <rppt@kernel.org>,
Suren Baghdasaryan <surenb@google.com>,
Michal Hocko <mhocko@suse.com>,
Axel Rasmussen <axelrasmussen@google.com>,
Yuanchu Xie <yuanchu@google.com>, Wei Xu <weixugc@google.com>,
Steven Rostedt <rostedt@goodmis.org>,
Masami Hiramatsu <mhiramat@kernel.org>,
Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
"Rafael J. Wysocki" <rafael@kernel.org>,
Pavel Machek <pavel@kernel.org>, Len Brown <lenb@kernel.org>,
Brendan Jackman <jackmanb@google.com>,
Johannes Weiner <hannes@cmpxchg.org>, Zi Yan <ziy@nvidia.com>,
Oscar Salvador <osalvador@suse.de>,
Qi Zheng <zhengqi.arch@bytedance.com>,
Shakeel Butt <shakeel.butt@linux.dev>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
linux-trace-kernel@vger.kernel.org, linux-pm@vger.kernel.org,
"linux-cxl@vger.kernel.orgkernel-team"@meta.com
Subject: Re: [PATCH v4 3/5] mm: convert compaction to zone lock wrappers
Date: Sat, 28 Feb 2026 08:31:20 -0800 [thread overview]
Message-ID: <20260228163121.213665-1-sj@kernel.org> (raw)
In-Reply-To: <3a09e46f52cf9f709b0725bc2b648cc5212843b2.1772206930.git.d@ilvokhin.com>
On Fri, 27 Feb 2026 16:00:25 +0000 Dmitry Ilvokhin <d@ilvokhin.com> wrote:
> Compaction uses compact_lock_irqsave(), which currently operates
> on a raw spinlock_t pointer so it can be used for both zone->lock
> and lruvec->lru_lock. Since zone lock operations are now wrapped,
> compact_lock_irqsave() can no longer directly operate on a
> spinlock_t when the lock belongs to a zone.
>
> Split the helper into compact_zone_lock_irqsave() and
> compact_lruvec_lock_irqsave(), duplicating the small amount of
> shared logic. As there are only two call sites and both statically
> know the lock type, this avoids introducing additional abstraction
> or runtime dispatch in the compaction path.
>
> No functional change intended.
>
> Signed-off-by: Dmitry Ilvokhin <d@ilvokhin.com>
> Acked-by: Shakeel Butt <shakeel.butt@linux.dev>
Reviewed-by: SeongJae Park <sj@kernel.org>
Thanks,
SJ
[...]
next prev parent reply other threads:[~2026-02-28 16:31 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-27 16:00 [PATCH v4 0/5] mm: zone lock tracepoint instrumentation Dmitry Ilvokhin
2026-02-27 16:00 ` [PATCH v4 1/5] mm: introduce zone lock wrappers Dmitry Ilvokhin
2026-02-27 20:36 ` David Hildenbrand (Arm)
2026-02-28 1:13 ` Zi Yan
2026-02-28 16:23 ` SeongJae Park
2026-02-27 16:00 ` [PATCH v4 2/5] mm: convert zone lock users to wrappers Dmitry Ilvokhin
2026-02-27 20:39 ` David Hildenbrand (Arm)
2026-02-28 1:14 ` Zi Yan
2026-02-27 16:00 ` [PATCH v4 3/5] mm: convert compaction to zone lock wrappers Dmitry Ilvokhin
2026-02-27 20:39 ` David Hildenbrand (Arm)
2026-02-28 1:16 ` Zi Yan
2026-02-28 16:31 ` SeongJae Park [this message]
2026-02-27 16:00 ` [PATCH v4 4/5] mm: rename zone->lock to zone->_lock Dmitry Ilvokhin
2026-02-27 20:40 ` David Hildenbrand (Arm)
2026-02-28 1:17 ` Zi Yan
2026-02-27 16:00 ` [PATCH v4 5/5] mm: add tracepoints for zone lock Dmitry Ilvokhin
2026-02-27 19:46 ` Steven Rostedt
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