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From: Vinay Banakar <vny@google.com>
To: Bharata B Rao <bharata@amd.com>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org,
	 akpm@linux-foundation.org, willy@infradead.org, mgorman@suse.de,
	 Wei Xu <weixugc@google.com>, Greg Thelen <gthelen@google.com>
Subject: Re: [PATCH] mm: Optimize TLB flushes during page reclaim
Date: Wed, 22 Jan 2025 05:09:15 -0600	[thread overview]
Message-ID: <CALf+9YdnpxRfLKqH4_u5XVLc_4d1H1f0b2gRx4-oAFL5NhQwvA@mail.gmail.com> (raw)
In-Reply-To: <9e0fc33a-2e2b-4366-ae1b-231038dfd2be@amd.com>

On Wed, Jan 22, 2025 at 2:59 AM Bharata B Rao <bharata@amd.com> wrote:
> and one flush request is issued for the entire list. Where is the PMD
> level (512) batching done? Is that implicit elsewhere in the flow?

Yes, shrink_folio_list() operates on one PMD at a time, so
pageout_list will contain at most 512 pages during each call. Please
refer to madvise_cold_or_pageout_pte_range() in mm/madvise.c for more
details.

Thanks!
Vinay


  reply	other threads:[~2025-01-22 11:09 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-01-20 22:47 Vinay Banakar
2025-01-21  0:05 ` Vinay Banakar
2025-01-22  8:59   ` Bharata B Rao
2025-01-22 11:09     ` Vinay Banakar [this message]
2025-01-22 11:31       ` Bharata B Rao
2025-01-22 13:28         ` Vinay Banakar
2025-01-22 20:05           ` SeongJae Park
2025-01-23 17:11             ` Vinay Banakar
2025-01-23 17:23               ` SeongJae Park
2025-01-23 18:17               ` Matthew Wilcox
2025-01-21  1:43 ` Byungchul Park
2025-01-21 18:03   ` Vinay Banakar
2025-01-23  4:17 ` Rik van Riel
2025-01-23 19:16   ` Vinay Banakar
2025-01-28 22:01     ` Rik van Riel
2025-03-17 19:20     ` Rik van Riel

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