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: 6+ 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
2026-06-24 7:17 ` David Hildenbrand (Arm) [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=8f56b160-11b7-48ec-9354-ecd08c2c1fca@kernel.org \
--to=david@kernel.org \
--cc=akpm@linux-foundation.org \
--cc=imran.f.khan@oracle.com \
--cc=liam@infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=ljs@kernel.org \
--cc=mhocko@suse.com \
--cc=rppt@kernel.org \
--cc=surenb@google.com \
--cc=vbabka@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox