From: Sarthak Sharma <sarthak.sharma@arm.com>
To: "Gregory Price (Meta)" <gourry@gourry.net>,
linux-kselftest@vger.kernel.org, linux-mm@kvack.org
Cc: linux-kernel@vger.kernel.org, kernel-team@meta.com,
akpm@linux-foundation.org, david@kernel.org, ljs@kernel.org,
liam@infradead.org, vbabka@kernel.org, rppt@kernel.org,
surenb@google.com, mhocko@suse.com, shuah@kernel.org
Subject: Re: [PATCH 6/8] selftests/mm: check MADV_COLD and MADV_PAGEOUT on partly advised THPs
Date: Mon, 19 Oct 2026 10:46:28 +0530 [thread overview]
Message-ID: <3eeed828-6abc-4501-bdc9-e16769f52100@arm.com> (raw)
In-Reply-To: <20261014175756.2035176-7-gourry@gourry.net>
On 10/14/26 11:27 PM, Gregory Price (Meta) wrote:
> Paging out a THP that the advised range fully covers must not corrupt it.
> A THP that the range only partly covers must be split before reclaim, or
> skipped, so that no page outside the range is reclaimed. MADV_COLD takes
> the same split path.
>
> Check that a whole PMD-mapped THP is swapped intact, that pages outside
> the range stay resident after paging out a base page or half of a PMD- or
> PTE-mapped THP, and that MADV_COLD on half of either THP preserves its
> contents. Tests skip when PMD-sized THPs cannot be allocated, and with
> /proc/kpageflags the PTE-mapped cases also confirm the folio stayed large.
>
> Signed-off-by: Gregory Price (Meta) <gourry@gourry.net>
> ---
> tools/testing/selftests/mm/madvise.c | 234 +++++++++++++++++++++++++++
> 1 file changed, 234 insertions(+)
>
Looks good to me.
Reviewed-by: Sarthak Sharma <sarthak.sharma@arm.com>
next prev parent reply other threads:[~2026-10-19 5:16 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-14 17:57 [PATCH 0/8] selftests/mm: add MADV_COLD and MADV_PAGEOUT contract tests Gregory Price (Meta)
2026-10-14 17:57 ` [PATCH 1/8] " Gregory Price (Meta)
2026-10-19 4:59 ` Sarthak Sharma
2026-10-14 17:57 ` [PATCH 2/8] selftests/mm: check that MADV_PAGEOUT skips holes and swapped pages Gregory Price (Meta)
2026-10-19 5:00 ` Sarthak Sharma
2026-10-14 17:57 ` [PATCH 3/8] selftests/mm: check MADV_COLD and MADV_PAGEOUT range handling Gregory Price (Meta)
2026-10-14 21:31 ` [PATCH] fixup! " Gregory Price (Meta)
2026-10-16 12:17 ` [PATCH 3/8] " Sarthak Sharma
2026-10-16 13:22 ` Gregory Price
2026-10-16 14:07 ` Gregory Price
2026-10-19 4:48 ` Sarthak Sharma
2026-10-14 17:57 ` [PATCH 4/8] selftests/mm: check that MADV_COLD and MADV_PAGEOUT reject hugetlb Gregory Price (Meta)
2026-10-19 5:02 ` Sarthak Sharma
2026-10-14 17:57 ` [PATCH 5/8] selftests/mm: check that MADV_COLD and MADV_PAGEOUT preserve shared memory Gregory Price (Meta)
2026-10-19 5:13 ` Sarthak Sharma
2026-10-14 17:57 ` [PATCH 6/8] selftests/mm: check MADV_COLD and MADV_PAGEOUT on partly advised THPs Gregory Price (Meta)
2026-10-19 5:16 ` Sarthak Sharma [this message]
2026-10-14 17:57 ` [PATCH 7/8] selftests/mm: check MADV_PAGEOUT file permissions Gregory Price (Meta)
2026-10-16 12:18 ` Sarthak Sharma
2026-10-16 13:48 ` Gregory Price
2026-10-19 4:51 ` Sarthak Sharma
2026-10-14 17:57 ` [PATCH 8/8] selftests/mm: check that unauthorized MADV_PAGEOUT skips large file folios Gregory Price (Meta)
2026-10-14 21:26 ` Gregory Price
2026-10-19 5:19 ` Sarthak Sharma
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