linux-kernel - Re: [PATCH v1 00/10] variable-order, large folios for anonymous memory

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Message-ID: <dcbbea37-7fbf-3a7c-6cfb-04dae715e967@intel.com>
Date:   Thu, 29 Jun 2023 07:59:24 +0800
From:   Yin Fengwei <fengwei.yin@...el.com>
To:     Yu Zhao <yuzhao@...gle.com>, 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>,
        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 00/10] variable-order, large folios for anonymous
 memory

Hi Yu,

On 6/29/23 02:22, Yu Zhao wrote:
> And please make sure it's disabled by default, because we are still
> missing many important functions, e.g., I don't think we can mlock()
> when large() && !pmd_mappable(), see mlock_pte_range() and
> mlock_vma_folio(). We can fix it along with many things later, but we
> need to present a plan and a schedule now. Otherwise, there would be
> pushback if we try to land the series without supporting mlock().
> 
> Do you or Fengwei plan to take on it? (I personally don't.) If not,
Do you mean the mlock() with large folio? Yes. I can work on it. Thanks.


Regards
Yin, Fengwei

> I'll try to find someone from our team to look at it. (It'd be more
> scalable if we have a coordinated group of people individually solving
> different problems.)