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Message-ID: <496d82e3-6a84-3a97-8865-1fdd8f41b867@arm.com>
Date:   Fri, 14 Jul 2023 19:01:11 +0100
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Subject: Re: [PATCH v3 1/4] mm: Non-pmd-mappable, large folios for
 folio_add_new_anon_rmap()
To:     Yu Zhao <yuzhao@google.com>
Cc:     Andrew Morton <akpm@linux-foundation.org>,
        Matthew Wilcox <willy@infradead.org>,
        "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
        Yin Fengwei <fengwei.yin@intel.com>,
        David Hildenbrand <david@redhat.com>,
        Catalin Marinas <catalin.marinas@arm.com>,
        Will Deacon <will@kernel.org>,
        Anshuman Khandual <anshuman.khandual@arm.com>,
        Yang Shi <shy828301@gmail.com>,
        "Huang, Ying" <ying.huang@intel.com>, Zi Yan <ziy@nvidia.com>,
        Luis Chamberlain <mcgrof@kernel.org>,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,
        linux-mm@kvack.org
References: <20230714160407.4142030-1-ryan.roberts@arm.com>
 <20230714161733.4144503-1-ryan.roberts@arm.com>
 <CAOUHufZdMjXP6vu1q+pXT8o5uhu5O0w_Fm5ccDvv2dzMiQv_=g@mail.gmail.com>
From:   Ryan Roberts <ryan.roberts@arm.com>
In-Reply-To: <CAOUHufZdMjXP6vu1q+pXT8o5uhu5O0w_Fm5ccDvv2dzMiQv_=g@mail.gmail.com>
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On 14/07/2023 17:52, Yu Zhao wrote:
> On Fri, Jul 14, 2023 at 10:17 AM Ryan Roberts <ryan.roberts@arm.com> wrote:
>>
>> In preparation for FLEXIBLE_THP support, improve
>> folio_add_new_anon_rmap() to allow a non-pmd-mappable, large folio to be
>> passed to it. In this case, all contained pages are accounted using the
>> order-0 folio (or base page) scheme.
>>
>> Signed-off-by: Ryan Roberts <ryan.roberts@arm.com>
>> Reviewed-by: Yu Zhao <yuzhao@google.com>
>> Reviewed-by: Yin Fengwei <fengwei.yin@intel.com>
> 
> This patch doesn't depend on the rest of the series and therefore can
> be merged separately in case the rest needs more discussion.
> 
> Ryan, please feel free to post other code paths (those from v1) you've
> optimized for large anon folios at any time, since each code path can
> be reviewed and merged individually as well.

Will do. Hoping to get the "batch zap" series out on Monday. Others need a bit
more time to bake as they will need to be aligned to the changes from the review
of this series first.