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Wed, 28 Oct 2026 10:21:25 -0700 (PDT) Date: Wed, 28 Oct 2026 13:21:24 -0400 From: Johannes Weiner To: Salvatore Dipietro Cc: abuehaze@amazon.com, akpm@linux-foundation.org, alisaidi@amazon.com, blakgeof@amazon.com, brauner@kernel.org, brendan.jackman@linux.dev, david@redhat.com, dgc@kernel.org, dipietro.salvatore@gmail.com, djwong@kernel.org, hch@infradead.org, hch@lst.de, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-xfs@vger.kernel.org, matt@readmodwrite.com, mhocko@suse.com, ritesh.list@gmail.com, rvvandan@amazon.com, stable@vger.kernel.org, surenb@google.com, vbabka@kernel.org, willy@infradead.org, ziy@nvidia.com Subject: Re: [PATCH 1/2] mm: page_alloc: do not give all non-blocking requests reserve access Message-ID: References: <20261027150002.318916-1-dipiets@amazon.it> X-Archived-By: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Stat-Signature: 868exyozewixi5a119zm46u9rdoqr436 X-Spam-Status: No, score=-5.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_PASS,SPF_PASS autolearn=no autolearn_force=no version=4.0.1 X-Rspamd-Server: rspam07 X-Rspamd-Queue-Id: D8834180009 X-Rspam-User: X-HE-Tag: 1793208086-154256 X-HE-Meta: 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 MisPm5d2 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 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 On Wed, Oct 28, 2026 at 11:19:08AM -0400, Johannes Weiner wrote: > On Tue, Oct 27, 2026 at 03:00:02PM +0000, Salvatore Dipietro wrote: > > > > Hi Johannes, > > > > Vlastimil asked that v6 of my page_alloc patch [1] not go to mainline > > before these two patches land, so Andrew parked v6 at the tail of > > mm-unstable and dropped its Cc: stable until then. > > > > Are you still planning to work on 1/2 and 2/2, and if so, do you have > > a rough ETA? Or would you rather post them as a separate series as > > they are? If anything is needed on my side to move them forward, I'm > > happy to help. > > > > For what it's worth, I ran both stacked under v6 on v7.3-rc1 and saw > > no performance difference on my benchmark with or without them. > > > > [1] https://lore.kernel.org/linux-mm/20261001082152.2879289-1-dipiets@amazon.it/ > > I'll work on this today, will have patches before EOD. Sorry for > dropping this. https://lore.kernel.org/all/20261028171719.2043421-1-hannes@cmpxchg.org/