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[142.162.113.129]) by smtp.gmail.com with ESMTPSA id n3sm3992935qkp.56.2022.01.07.10.54.01 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 07 Jan 2022 10:54:01 -0800 (PST) Received: from jgg by mlx with local (Exim 4.94) (envelope-from ) id 1n5uNF-00D0L4-3m; Fri, 07 Jan 2022 14:54:01 -0400 Date: Fri, 7 Jan 2022 14:54:01 -0400 From: Jason Gunthorpe To: "Matthew Wilcox (Oracle)" Cc: linux-mm@kvack.org, John Hubbard , Andrew Morton Subject: Re: [PATCH 00/17] Convert GUP to folios Message-ID: <20220107185401.GB6467@ziepe.ca> References: <20220102215729.2943705-1-willy@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220102215729.2943705-1-willy@infradead.org> Authentication-Results: imf13.hostedemail.com; dkim=pass header.d=ziepe.ca header.s=google header.b=F5r9juDe; spf=pass (imf13.hostedemail.com: domain of jgg@ziepe.ca designates 209.85.160.182 as permitted sender) smtp.mailfrom=jgg@ziepe.ca; dmarc=none X-Rspamd-Queue-Id: A875620010 X-Stat-Signature: wnzotuezjokzezpraftzrgwggg5d7ziz X-Rspamd-Server: rspam04 X-HE-Tag: 1641581642-311365 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: On Sun, Jan 02, 2022 at 09:57:12PM +0000, Matthew Wilcox (Oracle) wrote: > This patch series is against my current folio for-next branch. I know > it won't apply to sfr's next tree, and it's not for-next material yet. > I intend to submit it for 5.18 after I've rebased it to one of the > 5.17-rc releases. > > The overall effect of this (ignoring the primary "preparing for folios > that are not PAGE or PMD sized" purpose) is to reduce the size of gup.o > by ~700 bytes in the config I normally test with. > > This patchset just converts existing implementations to use folios. > There's no new API for consumers here to provide information in a more > efficient (address, length) format. That will be a separate patchset. > > Matthew Wilcox (Oracle) (17): > mm: Add folio_put_refs() > mm: Add folio_pincount_available() > mm: Add folio_pincount_ptr() > mm: Convert page_maybe_dma_pinned() to use a folio > gup: Add try_get_folio() > mm: Remove page_cache_add_speculative() and > page_cache_get_speculative() > gup: Add gup_put_folio() > gup: Add try_grab_folio() > gup: Convert gup_pte_range() to use a folio > gup: Convert gup_hugepte() to use a folio > gup: Convert gup_huge_pmd() to use a folio > gup: Convert gup_huge_pud() to use a folio > gup: Convert gup_huge_pgd() to use a folio > gup: Convert for_each_compound_head() to gup_for_each_folio() > gup: Convert for_each_compound_range() to gup_for_each_folio_range() > mm: Add isolate_lru_folio() > gup: Convert check_and_migrate_movable_pages() to use a folio Looked fine to me Reviewed-by: Jason Gunthorpe Thanks, Jason