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b=YaJzyj12zdYNf/Sp38pmFEguIVwlNkjfuCugKp+g1uMkq72x92tnb3Et0wjp9U07l DUbSRVJH/CR+z0Ecq4e/rcWN+XMiqAWAEyRnYEN/5gbxIlIEAGgaMT3Zii8mPQdvlb g6kBbv+wBsEiBEwDI5r0bdsPAAJ3zEJj47RpGvAY= Date: Fri, 18 Sep 2026 14:35:02 -0700 From: Andrew Morton To: "Vlastimil Babka (SUSE)" Cc: Salvatore Dipietro , hannes@cmpxchg.org, abuehaze@amazon.com, 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, mhocko@suse.com, ritesh.list@gmail.com, rvvandan@amazon.com, stable@vger.kernel.org, surenb@google.com, willy@infradead.org, ziy@nvidia.com Subject: Re: [PATCH v5] mm/page_alloc: avoid direct compaction for costly __GFP_NORETRY allocations Message-Id: <20260918143502.b4fb3587b64e260e14485348@linux-foundation.org> In-Reply-To: <23676471-d90c-40cd-a357-e71b3d426425@kernel.org> References: <20260918063203.2802342-1-dipiets@amazon.it> <23676471-d90c-40cd-a357-e71b3d426425@kernel.org> X-Mailer: Sylpheed 3.8.0beta1 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Stat-Signature: jatft71b1z1esqe5e8tppxjahpjojhm1 X-Rspam-User: X-Rspamd-Queue-Id: 72948100007 X-Rspamd-Server: rspam03 X-HE-Tag: 1789767304-443739 X-HE-Meta: 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 NYq0LxtO KMjY1UgbpaUBMZD66IQLSC+W1RsTcSG++9M5m0EFGon+DnS3aFYu24SAj876+2ASlhvu2nha8dRUx+TgXPF4ETZ4xPEcmJDeTQJmTijzfcwUos+K38hpluSrcNBQHT9OQbERSU8vrjLPFACvGMpq5EvOobRZCvTNlT3UCarJC1SpP3Oi5TyVPmZzRwKTvKSBjxav9bTH3Cc9CdvqpDQdWLqh4Q7roCnj+kot9nID/AhOCqyim6+bp3ZK7u3gfSN2AdMqnB9j+SO1RwlNwhwi8mqINZCA6zTPfWUG1kYr5CYwMKryLIZe7AmV6McqkJLajOVhR43N1ZtYoFM/scc+YYBd8YKtZTkH8ymmuJxL3l2yIhoFGd6qliVQTYT0Tca+HVn/7Bek7N+7c+dI= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Fri, 18 Sep 2026 08:40:05 +0200 "Vlastimil Babka (SUSE)" wrote: > On 9/18/26 08:32, Salvatore Dipietro wrote: > > > > On Tue, Sep 15, 2026 at 04:17:00PM +0000, Johannes Weiner wrote: > >> It would be possible to remove the costly_order gate here and just > >> bail on __GFP_NORETRY. But no strong feelings. > > > > Will do, I'll drop the costly_order gate and bail on __GFP_NORETRY. > > > > Andrew, since you dropped v5 and restored v4 in mm-unstable, I'll send a > > v6 (v4 plus the above change) unless you'd rather have an incremental > > patch on top of v4. Let me know if anything else is needed on my side. > > v4 is in mm-hotfixes-stable now, so an incremental fix will be easier now I > think. > I just demoted it into mm-hotfixes-unstable. So a clean v6 would be best now, please.