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Message-ID: <CAOUHufYBSc=RKpPg4PuHduJiWKOe+vpA_rZVo-9-gFvVue0huQ@mail.gmail.com>
Date: Mon, 26 Jun 2023 20:54:54 -0600
From: Yu Zhao <yuzhao@...gle.com>
To: Ryan Roberts <ryan.roberts@....com>
Cc: Andrew Morton <akpm@...ux-foundation.org>,
"Matthew Wilcox (Oracle)" <willy@...radead.org>,
"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
Yin Fengwei <fengwei.yin@...el.com>,
David Hildenbrand <david@...hat.com>,
Catalin Marinas <catalin.marinas@....com>,
Will Deacon <will@...nel.org>,
Geert Uytterhoeven <geert@...ux-m68k.org>,
Christian Borntraeger <borntraeger@...ux.ibm.com>,
Sven Schnelle <svens@...ux.ibm.com>,
Thomas Gleixner <tglx@...utronix.de>,
Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
Dave Hansen <dave.hansen@...ux.intel.com>,
"H. Peter Anvin" <hpa@...or.com>, linux-kernel@...r.kernel.org,
linux-mm@...ck.org, linux-alpha@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, linux-ia64@...r.kernel.org,
linux-m68k@...ts.linux-m68k.org, linux-s390@...r.kernel.org
Subject: Re: [PATCH v1 06/10] mm: Allow deferred splitting of arbitrary large
anon folios
On Mon, Jun 26, 2023 at 11:15 AM Ryan Roberts <ryan.roberts@....com> wrote:
>
> With the introduction of large folios for anonymous memory, we would
> like to be able to split them when they have unmapped subpages, in order
> to free those unused pages under memory pressure. So remove the
> artificial requirement that the large folio needed to be at least
> PMD-sized.
>
> Signed-off-by: Ryan Roberts <ryan.roberts@....com>
Reviewed-by: Yu Zhao <yuzhao@...gle.com>
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