From: Andrew Morton <akpm@linux-foundation.org>
To: Dev Jain <dev.jain@arm.com>
Cc: "Lorenzo Stoakes (ARM)" <ljs@kernel.org>,
david@kernel.org, muchun.song@linux.dev, osalvador@suse.de,
riel@surriel.com, liam@infradead.org, vbabka@kernel.org,
harry@kernel.org, jannh@google.com, lance.yang@linux.dev,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
ryan.roberts@arm.com, anshuman.khandual@arm.com
Subject: Re: [PATCH v3 1/5] mm/rmap: convert page -> folio for hwpoison checks
Date: Sat, 25 Jul 2026 19:07:21 -0700 [thread overview]
Message-ID: <20260725190721.f2e121f118ef817e42bb3874@linux-foundation.org> (raw)
In-Reply-To: <8d2f756a-12a2-43bb-8849-3e71c1ce5d8f@arm.com>
On Sat, 25 Jul 2026 13:06:25 +0530 Dev Jain <dev.jain@arm.com> wrote:
> >> @@ -2204,7 +2205,11 @@ static bool try_to_unmap_one(struct folio *folio, struct vm_area_struct *vma,
> >> /* Update high watermark before we lower rss */
> >> update_hiwater_rss(mm);
> >>
> >> - if (PageHWPoison(subpage) && (flags & TTU_HWPOISON)) {
> >> + /*
> >> + * With TTU_HWPOISON, we only expect small folios or hugetlb
> >> + * folios here for now.
> >> + */
> >> + if (folio_test_hwpoison(folio) && (flags & TTU_HWPOISON)) {
> >
> > As per v2 discussion, I feel this could be tightened up, maybe something like:
> >
> > /* unmap_poisoned_folio() only refs order-0 or hugetlb folios */
> >
>
> I can do this. But note that this series is in mm-unstable already - what should
> I base the v4 on?
Ordinarily basing on latest Linus works. But this patchset has ~450
patches ahead of it and a quick trial merge wasn't promising.
I could drop the v3 series so you can base on next mm-new, please lmk.
Or
mm> git log --oneline | grep "mm/rmap: convert page -> folio for hwpoison checks"
bb2f8a7eb126 mm/rmap: convert page -> folio for hwpoison checks
mm> git checkout bb2f8a7eb126^
next prev parent reply other threads:[~2026-07-26 2:07 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-13 5:00 [PATCH v3 0/5] mm/rmap: Refactor try_to_unmap_one Dev Jain
2026-07-13 5:00 ` [PATCH v3 1/5] mm/rmap: convert page -> folio for hwpoison checks Dev Jain
2026-07-24 9:20 ` Lorenzo Stoakes (ARM)
2026-07-25 7:36 ` Dev Jain
2026-07-26 2:07 ` Andrew Morton [this message]
2026-07-26 8:22 ` Dev Jain
2026-07-13 5:00 ` [PATCH v3 2/5] mm/rmap: Add try_to_unmap_hugetlb_one Dev Jain
2026-07-24 10:39 ` Lorenzo Stoakes (ARM)
2026-07-25 8:47 ` Dev Jain
2026-07-13 5:00 ` [PATCH v3 3/5] mm/rmap: refactor some code around lazyfree folio unmapping Dev Jain
2026-07-13 5:00 ` [PATCH v3 4/5] mm/rmap: refactor anon folio unmap in try_to_unmap_one Dev Jain
2026-07-28 19:27 ` David Hildenbrand (Arm)
2026-07-13 5:00 ` [PATCH v3 5/5] mm/rmap: add anon folio unmap dispatcher Dev Jain
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