From: "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
To: David Hildenbrand <david@kernel.org>, Zi Yan <ziy@nvidia.com>,
Baolin Wang <baolin.wang@linux.alibaba.com>,
"Liam R. Howlett" <liam@infradead.org>,
Nico Pache <nico.pache@linux.dev>,
Ryan Roberts <ryan.roberts@arm.com>, Dev Jain <dev.jain@arm.com>,
Barry Song <baohua@kernel.org>,
Lance Yang <lance.yang@linux.dev>,
Usama Arif <usama.arif@linux.dev>,
Kiryl Shutsemau <kas@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 3/3] mm/khugepaged: release contended mmap read lock after scanning enough VMAs
Date: Fri, 6 Nov 2026 12:23:37 +0000 [thread overview]
Message-ID: <au3GntBF9AE57h4C@gremlin> (raw)
In-Reply-To: <au3CUJO9zBMHLx-B@gremlin>
On Fri, Nov 06, 2026 at 12:07:53PM +0000, Lorenzo Stoakes (ARM) wrote:
> On reflection, I think this would be better implemented as something like:
>
> static void collapse_scan_mm_slot(unsigned int progress_max, ...)
> {
> unsigned int long lock_start = jiffies;
The rare unsigned int long type, rarely deployed but super effective when it is
:P
(sorry losing my mind, should be an unsigned long)
--
Cheers, Lorenzo
next prev parent reply other threads:[~2026-11-06 12:23 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-11-05 20:57 [PATCH v2 0/3] mm/khugepaged: bound mmap_lock hold time when walking an mm's VMAs Lorenzo Stoakes (ARM)
2026-11-05 20:57 ` [PATCH v2 1/3] Revert "mm/khugepaged: remove definition of struct khugepaged_mm_slot" Lorenzo Stoakes (ARM)
2026-11-05 21:47 ` Jose A. Perez de Azpillaga
2026-11-06 9:41 ` Baolin Wang
2026-11-05 20:57 ` [PATCH v2 2/3] mm/khugepaged: scan mm's more efficiently under mmap_lock contention Lorenzo Stoakes (ARM)
2026-11-05 21:48 ` Jose A. Perez de Azpillaga
2026-11-06 9:31 ` Baolin Wang
2026-11-05 20:57 ` [PATCH v2 3/3] mm/khugepaged: release contended mmap read lock after scanning enough VMAs Lorenzo Stoakes (ARM)
2026-11-05 21:53 ` Jose A. Perez de Azpillaga
2026-11-06 10:03 ` Lorenzo Stoakes (ARM)
2026-11-06 10:29 ` Jose A. Perez de Azpillaga
2026-11-06 10:33 ` Lorenzo Stoakes (ARM)
2026-11-06 10:49 ` Jose A. Perez de Azpillaga
2026-11-06 2:12 ` Vernon Yang
2026-11-06 9:29 ` Vernon Yang
2026-11-06 10:49 ` Lorenzo Stoakes (ARM)
2026-11-06 9:38 ` Baolin Wang
2026-11-06 10:52 ` Lorenzo Stoakes (ARM)
2026-11-06 12:07 ` Lorenzo Stoakes (ARM)
2026-11-06 12:23 ` Lorenzo Stoakes (ARM) [this message]
2026-11-06 13:26 ` Vernon Yang
2026-11-06 15:24 ` Lorenzo Stoakes (ARM)
2026-11-06 15:39 ` Lorenzo Stoakes (ARM)
2026-11-09 14:01 ` David Hildenbrand (Arm)
2026-11-09 14:12 ` Lorenzo Stoakes (ARM)
2026-11-09 15:00 ` David Hildenbrand (Arm)
2026-11-06 20:58 ` sashiko-bot
2026-11-10 17:05 ` Lorenzo Stoakes (ARM)
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