From: Kiryl Shutsemau <kirill@shutemov.name>
To: Mike Rapoport <rppt@kernel.org>
Cc: akpm@linux-foundation.org, david@kernel.org, ljs@kernel.org,
nico.pache@linux.dev, baolin.wang@linux.alibaba.com,
baohua@kernel.org, dev.jain@arm.com, hughd@google.com,
lance.yang@linux.dev, liam@infradead.org, mhocko@suse.com,
ryan.roberts@arm.com, shuah@kernel.org, surenb@google.com,
usama.arif@linux.dev, vbabka@kernel.org, ziy@nvidia.com,
usama.anjum@arm.com, agordeev@linux.ibm.com, linux-mm@kvack.org,
linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v4 05/19] selftests/mm: make the swap cases' swapout reliable
Date: Sun, 23 Aug 2026 20:49:42 +0100 [thread overview]
Message-ID: <aotOf7s43-oD84r-@thinkstation> (raw)
In-Reply-To: <178721523516.2799959.17614116166980239496.b4-review@b4>
On Thu, Aug 20, 2026 at 11:40:35AM +0300, Mike Rapoport wrote:
> > Ask again for up to two seconds, with the range held out of the daemon's
> > reach while asking. The collapse each case runs next puts MADV_HUGEPAGE
> > back, so only the setup is affected.
>
> "Retry several times for up to two seconds meanwhile holding the range
> out of the khugepaged reach. The collapse each case runs next restores
> MADV_NOHUGEPAGE, so only setup is affected"
Small correction: it restores `MADV_HUGEPAGE` -- `wait_for_scan()` sets
that before it waits. `MADV_NOHUGEPAGE` is what the setup puts down.
Ack, for other input.
--
Kiryl Shutsemau / Kirill A. Shutemov
next prev parent reply other threads:[~2026-08-23 19:49 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-15 1:58 [PATCH v4 00/19] selftests/mm: improve khugepaged coverage Kiryl Shutsemau
2026-08-15 1:58 ` [PATCH v4 01/19] selftests/mm: raise the khugepaged test-case cap Kiryl Shutsemau
2026-08-18 9:11 ` Lorenzo Stoakes (ARM)
2026-08-15 1:58 ` [PATCH v4 02/19] selftests/mm: skip collapse_compound_extreme() where the PMD is too large Kiryl Shutsemau
2026-08-18 9:22 ` Lorenzo Stoakes (ARM)
2026-08-15 1:58 ` [PATCH v4 03/19] selftests/mm: scale khugepaged's collapse wait with the PMD size Kiryl Shutsemau
2026-08-18 10:04 ` Lorenzo Stoakes (ARM)
2026-08-23 19:17 ` Kiryl Shutsemau
2026-08-15 1:58 ` [PATCH v4 04/19] selftests/mm: skip khugepaged page cache cases without a PMD folio Kiryl Shutsemau
2026-08-18 10:07 ` Lorenzo Stoakes (ARM)
2026-08-23 19:44 ` Kiryl Shutsemau
2026-08-20 8:40 ` Mike Rapoport
2026-08-15 1:58 ` [PATCH v4 05/19] selftests/mm: make the swap cases' swapout reliable Kiryl Shutsemau
2026-08-18 10:11 ` Lorenzo Stoakes (ARM)
2026-08-20 8:40 ` Mike Rapoport
2026-08-23 19:49 ` Kiryl Shutsemau [this message]
2026-08-15 1:58 ` [PATCH v4 06/19] selftests/mm: stop khugepaged during the MADV_COLLAPSE cases Kiryl Shutsemau
2026-08-18 10:12 ` Lorenzo Stoakes (ARM)
2026-08-20 8:40 ` Mike Rapoport
2026-08-15 1:58 ` [PATCH v4 07/19] selftests/mm: move is_backed_by_folio() into vm_util Kiryl Shutsemau
2026-08-18 10:14 ` Lorenzo Stoakes (ARM)
2026-08-15 1:58 ` [PATCH v4 08/19] selftests/mm: add folio-order check for address ranges Kiryl Shutsemau
2026-08-18 10:25 ` Lorenzo Stoakes (ARM)
2026-08-20 8:40 ` Mike Rapoport
2026-08-15 1:58 ` [PATCH v4 09/19] selftests/mm: add folio-order detection self-check Kiryl Shutsemau
2026-08-18 10:30 ` Lorenzo Stoakes (ARM)
2026-08-20 8:40 ` Mike Rapoport
2026-08-15 1:58 ` [PATCH v4 10/19] selftests/mm: add khugepaged completion barrier helper Kiryl Shutsemau
2026-08-18 10:34 ` Lorenzo Stoakes (ARM)
2026-08-20 8:40 ` Mike Rapoport
2026-08-15 1:58 ` [PATCH v4 11/19] selftests/mm: add order-parameterized khugepaged collapse cases Kiryl Shutsemau
2026-08-18 10:38 ` Lorenzo Stoakes (ARM)
2026-08-20 8:40 ` Mike Rapoport
2026-08-15 1:58 ` [PATCH v4 12/19] selftests/mm: parameterize the mixed-source collapse case by source order Kiryl Shutsemau
2026-08-18 10:47 ` Lorenzo Stoakes (ARM)
2026-08-20 8:40 ` Mike Rapoport
2026-08-15 1:58 ` [PATCH v4 13/19] selftests/mm: cover a shared-source collapse write race Kiryl Shutsemau
2026-08-20 8:40 ` Mike Rapoport
2026-08-15 1:58 ` [PATCH v4 14/19] selftests/mm: run every supported collapse order by default Kiryl Shutsemau
2026-08-20 8:40 ` Mike Rapoport
2026-08-15 1:58 ` [PATCH v4 15/19] selftests/mm: check that one khugepaged pass collapses one window Kiryl Shutsemau
2026-08-15 1:58 ` [PATCH v4 16/19] selftests/mm: add khugepaged race harness Kiryl Shutsemau
2026-08-15 1:58 ` [PATCH v4 17/19] selftests/mm: race collapse of windows with holes Kiryl Shutsemau
2026-08-15 1:59 ` [PATCH v4 18/19] selftests/mm: add memory-pressure threads to the khugepaged race harness Kiryl Shutsemau
2026-08-15 1:59 ` [PATCH v4 19/19] selftests/mm: zap whole PTE tables in " Kiryl Shutsemau
2026-08-20 8:40 ` [PATCH v4 00/19] selftests/mm: improve khugepaged coverage Mike Rapoport
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