From: Barry Song <21cnbao@gmail.com>
To: Lance Yang <ioworker0@gmail.com>
Cc: david@redhat.com, akpm@linux-foundation.org,
baolin.wang@linux.alibaba.com, chrisl@kernel.org,
kasong@tencent.com, lance.yang@linux.dev,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
linux-riscv@lists.infradead.org, lorenzo.stoakes@oracle.com,
ryan.roberts@arm.com, v-songbaohua@oppo.com, x86@kernel.org,
ying.huang@intel.com, zhengtangquan@oppo.com
Subject: Re: [PATCH v4 3/4] mm: Support batched unmap for lazyfree large folios during reclamation
Date: Fri, 27 Jun 2025 09:46:37 +1200 [thread overview]
Message-ID: <CAGsJ_4w5Obx9=P0wkrbLaDzKpG0e-7xs7jgHRa91KO7e92MO8g@mail.gmail.com> (raw)
In-Reply-To: <20250626092905.31305-1-ioworker0@gmail.com>
On Thu, Jun 26, 2025 at 9:29 PM Lance Yang <ioworker0@gmail.com> wrote:
>
[...]
> +
> + /*
> + * If we are sure that we batched the entire folio and cleared
> + * all PTEs, we can just optimize and stop right here.
> + */
> + if (nr_pages == folio_nr_pages(folio))
David also mentioned if (nr_pages > 1 && nr_pages == folio_nr_pages(folio)).
I assume it’s still fine when nr_pages == 1 for small folios? No?
> goto walk_done;
> continue;
> walk_abort:
> --
>
Thanks,
Lance
next prev parent reply other threads:[~2025-06-26 21:46 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-02-14 9:30 [PATCH v4 0/4] mm: batched unmap " Barry Song
2025-02-14 9:30 ` [PATCH v4 1/4] mm: Set folio swapbacked iff folios are dirty in try_to_unmap_one Barry Song
2025-02-14 9:30 ` [PATCH v4 2/4] mm: Support tlbbatch flush for a range of PTEs Barry Song
2025-02-14 9:30 ` [PATCH v4 3/4] mm: Support batched unmap for lazyfree large folios during reclamation Barry Song
2025-06-24 12:55 ` David Hildenbrand
2025-06-24 15:26 ` Lance Yang
2025-06-24 15:34 ` David Hildenbrand
2025-06-24 16:25 ` Lance Yang
2025-06-25 9:38 ` Barry Song
2025-06-25 10:00 ` David Hildenbrand
2025-06-25 10:38 ` Barry Song
2025-06-25 10:43 ` David Hildenbrand
2025-06-25 10:49 ` Barry Song
2025-06-25 10:59 ` David Hildenbrand
2025-06-25 10:47 ` Lance Yang
2025-06-25 10:49 ` David Hildenbrand
2025-06-25 10:57 ` Barry Song
2025-06-25 11:01 ` David Hildenbrand
2025-06-25 11:15 ` Barry Song
2025-06-25 11:27 ` David Hildenbrand
2025-06-25 11:42 ` Barry Song
2025-06-25 12:09 ` David Hildenbrand
2025-06-25 12:20 ` Lance Yang
2025-06-25 12:25 ` David Hildenbrand
2025-06-25 12:35 ` Lance Yang
2025-06-25 21:03 ` Barry Song
2025-06-26 1:17 ` Lance Yang
2025-06-26 8:17 ` David Hildenbrand
2025-06-26 9:29 ` Lance Yang
2025-06-26 12:44 ` Lance Yang
2025-06-26 13:16 ` David Hildenbrand
2025-06-26 13:52 ` Lance Yang
2025-06-26 14:39 ` David Hildenbrand
2025-06-26 15:06 ` Lance Yang
2025-06-26 21:46 ` Barry Song [this message]
2025-06-26 21:52 ` David Hildenbrand
2025-06-25 12:58 ` Lance Yang
2025-06-25 13:02 ` David Hildenbrand
2025-06-25 8:44 ` Lance Yang
2025-06-25 9:29 ` Lance Yang
2025-07-01 10:03 ` Harry Yoo
2025-07-01 13:27 ` Harry Yoo
2025-07-01 16:17 ` David Hildenbrand
2025-02-14 9:30 ` [PATCH v4 4/4] mm: Avoid splitting pmd for lazyfree pmd-mapped THP in try_to_unmap Barry Song
2025-06-25 13:49 ` [PATCH v4 0/4] mm: batched unmap lazyfree large folios during reclamation Lorenzo Stoakes
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