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Received: from willy by casper.infradead.org with local (Exim 4.98.2 #2 (Red Hat Linux)) id 1us2XS-0000000FFKr-3XDx; Fri, 29 Aug 2025 17:05:22 +0000 Date: Fri, 29 Aug 2025 18:05:22 +0100 From: Matthew Wilcox To: Vlastimil Babka , Andrew Morton Cc: Christoph Lameter , David Rientjes , Roman Gushchin , Harry Yoo , linux-mm@kvack.org Subject: Re: [PATCH 00/22] Prepare slab for memdescs Message-ID: References: <20250829154728.3397606-1-willy@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250829154728.3397606-1-willy@infradead.org> X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: CDEB818000D X-Stat-Signature: wdw8h9zf8sg4nkfm1mnmjdw49fboyqg6 X-Rspam-User: X-HE-Tag: 1756488628-997291 X-HE-Meta: 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 iLfm0now /9/d6RXROQcCeIa9HE2SJD7CkKJw5ii8Gz+qQ5xJBEAi6XoJXgu9KOVICFg40vRblePbzzmnewfi5j+/mw560WrzQTy9jfzQ6UGqL0AGHIb0xFj3NhBOyHWt66M4xnR6shnRsafWTz/VpGppAMRzfxf79pAJ9G3tBuSyI4BhQ8FfouskwhGysP4yufLH1V1shYpbXYXySCjM/n+g0rZWocxsqsRDITPQnUWloMnWFDZHrYXQ= 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, Aug 29, 2025 at 04:47:04PM +0100, Matthew Wilcox (Oracle) wrote: > When we separate struct folio, struct page and struct slab from each > other, converting to folios then to slabs will be nonsense. It made > sense under the 'folio is just a head page' interpretation, but with > full separation, page_folio() will return NULL for a page which belongs > to a slab. > > This patch series removes almost all mentions of folio from slab. > There are a few folio_test_slab() invocations left around the tree that > I haven't decided how to handle yet. We're not yet quite at the point > of separately allocating struct slab, but that's what I'll be working > on next. > > Based on next-20250829. It has dependencies on both the memdesc_flags_t > conversion and the sheaves work. Both should be trivial to resolve, > but it may be a little awkward to shepherd into Linus' tree. Email is being ridiculously slow today. You can find all these patches at https://git.infradead.org/?p=users/willy/pagecache.git;a=shortlog;h=refs/heads/slab-future or git://git.infradead.org/users/willy/pagecache.git refs/heads/slab-future I'll wait a few more hours and resend the ones that don't make it to the archive.