From: "David Hildenbrand (Arm)" <david@kernel.org>
To: Imran Khan <imran.f.khan@oracle.com>,
akpm@linux-foundation.org, ljs@kernel.org, liam@infradead.org,
vbabka@kernel.org, rppt@kernel.org, surenb@google.com,
mhocko@suse.com
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] mm/vmstat: avoid taking zone lock in /proc/buddyinfo reads
Date: Wed, 24 Jun 2026 09:17:00 +0200 [thread overview]
Message-ID: <8f56b160-11b7-48ec-9354-ecd08c2c1fca@kernel.org> (raw)
In-Reply-To: <20260604134245.1580287-1-imran.f.khan@oracle.com>
On 6/4/26 15:42, Imran Khan wrote:
> frag_show_print() just reads zone->free_area[order].nr_free, so
> it can safely do this without needing the zone->lock.
>
> Pass nolock=true from frag_show(), so that walk_zones_in_node()
> can skip the zone->lock acquisition.
>
> Signed-off-by: Imran Khan <imran.f.khan@oracle.com>
> ---
Acked-by: David Hildenbrand (Arm) <david@kernel.org>
--
Cheers,
David
prev parent reply other threads:[~2026-06-24 7:17 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-04 13:42 [PATCH] mm/vmstat: avoid taking zone lock in /proc/buddyinfo reads Imran Khan
2026-06-04 17:04 ` Joshua Hahn
2026-06-05 12:14 ` Vlastimil Babka (SUSE)
2026-06-08 8:17 ` Lorenzo Stoakes
2026-06-24 7:16 ` Lorenzo Stoakes
2026-06-28 20:08 ` Andrew Morton
2026-06-29 10:18 ` Lorenzo Stoakes
2026-06-24 7:17 ` David Hildenbrand (Arm) [this message]
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