Re: [PATCH v3 0/5] add persistent huge zero folio support

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To: Kiryl Shutsemau <kirill@xxxxxxxxxxxxx>
Subject: Re: [PATCH v3 0/5] add persistent huge zero folio support
From: Lorenzo Stoakes <lorenzo.stoakes@xxxxxxxxxx>
Date: Mon, 11 Aug 2025 11:38:36 +0100
Cc: David Hildenbrand <david@xxxxxxxxxx>, "Pankaj Raghav (Samsung)" <kernel@xxxxxxxxxxxxxxxx>, Suren Baghdasaryan <surenb@xxxxxxxxxx>, Ryan Roberts <ryan.roberts@xxxxxxx>, Baolin Wang <baolin.wang@xxxxxxxxxxxxxxxxx>, Vlastimil Babka <vbabka@xxxxxxx>, Zi Yan <ziy@xxxxxxxxxx>, Mike Rapoport <rppt@xxxxxxxxxx>, Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>, Michal Hocko <mhocko@xxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, Nico Pache <npache@xxxxxxxxxx>, Dev Jain <dev.jain@xxxxxxx>, "Liam R . Howlett" <Liam.Howlett@xxxxxxxxxx>, Jens Axboe <axboe@xxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, linux-mm@xxxxxxxxx, willy@xxxxxxxxxxxxx, Ritesh Harjani <ritesh.list@xxxxxxxxx>, linux-block@xxxxxxxxxxxxxxx, linux-fsdevel@xxxxxxxxxxxxxxx, "Darrick J . Wong" <djwong@xxxxxxxxxx>, mcgrof@xxxxxxxxxx, gost.dev@xxxxxxxxxxx, hch@xxxxxx, Pankaj Raghav <p.raghav@xxxxxxxxxxx>
In-reply-to: <osippshkfu7ip5tg42zc5nyxegrplm2kekskhitrapzjdyps3h@hodqaqh5r26o>

On Mon, Aug 11, 2025 at 11:36:29AM +0100, Kiryl Shutsemau wrote:
> We have 'totalram_pages() < (512 << (20 - PAGE_SHIFT))' check in
> hugepage_init(). It can [be abstracted out and] re-used.

We can decide to do that at a later date with whatever heuristics we
like. Let's just get this merged, it's behind a config flag there's no harm
being done here.

References:
- [PATCH v3 0/5] add persistent huge zero folio support
  - From: Pankaj Raghav (Samsung)
- Re: [PATCH v3 0/5] add persistent huge zero folio support
  - From: Kiryl Shutsemau
- Re: [PATCH v3 0/5] add persistent huge zero folio support
  - From: David Hildenbrand
- Re: [PATCH v3 0/5] add persistent huge zero folio support
  - From: David Hildenbrand
- Re: [PATCH v3 0/5] add persistent huge zero folio support
  - From: Kiryl Shutsemau
- Re: [PATCH v3 0/5] add persistent huge zero folio support
  - From: Lorenzo Stoakes
- Re: [PATCH v3 0/5] add persistent huge zero folio support
  - From: Kiryl Shutsemau
- Re: [PATCH v3 0/5] add persistent huge zero folio support
  - From: David Hildenbrand
- Re: [PATCH v3 0/5] add persistent huge zero folio support
  - From: Kiryl Shutsemau

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