From: Yeoreum Yun <yeoreum.yun@arm.com>
To: "David Hildenbrand (Arm)" <david@kernel.org>
Cc: Yeoreum Yun <yeoreum.yun@arm.com>,
Andrew Morton <akpm@linux-foundation.org>,
Lorenzo Stoakes <ljs@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>,
Vlastimil Babka <vbabka@kernel.org>,
Mike Rapoport <rppt@kernel.org>,
Suren Baghdasaryan <surenb@google.com>,
Michal Hocko <mhocko@suse.com>, Shuah Khan <shuah@kernel.org>,
Kevin Brodsky <kevin.brodsky@arm.com>,
linux-mm@kvack.org, linux-kselftest@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v6 2/3] kselftest: mm: replace usage of /proc/self/smaps for check_huge_xxx() helper
Date: Tue, 15 Sep 2026 10:55:06 +0100 [thread overview]
Message-ID: <aqkV-saU4BWbqu4s@e129823.arm.com> (raw)
In-Reply-To: <6c9727cb-6cfa-4d0a-b8d8-077cbeb5cf4f@kernel.org>
On Mon, Sep 14, 2026 at 04:10:49PM +0200, David Hildenbrand (Arm) wrote:
>
> >
> > - if (hpage_size == pmd_pagesize)
> > - return __check_pmd_huge(addr, "AnonHugePages: ", nr_hpages, hpage_size);
> > +static bool check_huge_type(uint64_t categories, uint64_t kpageflags,
> > + enum check_huge_type type)
> > +{
> > + const bool file = categories & PAGE_IS_FILE;
> > + const bool swapbacked = kpageflags & KPF_SWAPBACKED;
> > +
> > + switch (type) {
> > + case CHECK_HUGE_ANON:
> > + return !file;
> > + case CHECK_HUGE_FILE:
> > + return file && !swapbacked;
> > + case CHECK_HUGE_SHMEM:
> > + return file && swapbacked;
> > + }
>
> I wasn't probably clear. Don't add an intermediate CHECK_HUGE_SHMEM. Make
> check_huge_shmem() simply use CHECK_HUGE_FILE and remove the function then in
> patch #3.
Okay. Thanks for clarification ;)
--
Sincerely,
Yeoreum Yun
next prev parent reply other threads:[~2026-09-15 9:55 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-14 7:30 [PATCH v6 0/3] kselftest: mm: fix some failure of split_huge_page_test Yeoreum Yun
2026-09-14 7:30 ` [PATCH v6 1/3] kselftest: mm: prevent random failure of huge page split for khugepaged Yeoreum Yun
2026-09-14 7:30 ` [PATCH v6 2/3] kselftest: mm: replace usage of /proc/self/smaps for check_huge_xxx() helper Yeoreum Yun
2026-09-14 14:10 ` David Hildenbrand (Arm)
2026-09-15 9:55 ` Yeoreum Yun [this message]
2026-09-14 7:30 ` [PATCH v6 3/3] kselftest: mm: remove check_huge_shmem() Yeoreum Yun
2026-09-14 14:16 ` David Hildenbrand (Arm)
2026-09-15 9:55 ` Yeoreum Yun
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