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Shutemov" , Johannes Weiner , Baolin Wang , Kemeng Shi , Mel Gorman , Rohan Puri , Adam Manzanares , "Vishal Moola (Oracle)" Subject: Re: [PATCH v3 0/3] Enable >0 order folio memory compaction Message-ID: References: <20240202161554.565023-1-zi.yan@sent.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20240202161554.565023-1-zi.yan@sent.com> X-Rspamd-Server: rspam08 X-Rspamd-Queue-Id: E3D0A160020 X-Stat-Signature: bm1hm1k9r6po7ifjxs8p7t154x4bjn18 X-Rspam-User: X-HE-Tag: 1706903745-925597 X-HE-Meta: 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 5mM8BNwd 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Fri, Feb 02, 2024 at 11:15:51AM -0500, Zi Yan wrote: > From: Zi Yan > > Hi all, > > This patchset enables >0 order folio memory compaction, which is one of > the prerequisitions for large folio support[1]. > > [1] https://lore.kernel.org/linux-mm/20230912162815.440749-1-zi.yan@sent.com/ This URL started being referenced to your patch series instead of the rationale as to why this is important, and that is that compaction today skips pages with order > 0 and that this is already a problem for the page cache. The correct URL which you had in your *first* cover letter is: https://lore.kernel.org/linux-mm/f8d47176-03a8-99bf-a813-b5942830fd73@arm.com/ Luis