From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 15755365A14; Fri, 18 Sep 2026 06:40:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789713614; cv=none; b=dqEQ9E451ZCI1CEGlLdePK+dMsUqKxzKhaLKMbQdB5HEaNtMnlLnSSbM/h6bXHTvMyhDbFHfWKJQZNhCmKwYwk86Kq41v4+V228Pn93/qBUMD+kWI2lyaSyLs4MZxgXniNTBcc9bIjaO7Il/DuOSIjUzfIoh9lPlCoJahhyWzuQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789713614; c=relaxed/simple; bh=jbCz3/l/IS3j3i0ZlvXXWgqv2Qhoy5HUJUfa0PhdFB4=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=sKfzkmNiM0xDt3gIYk3e5qPvscWxD7i8th5IZ+fWcf3hQugQ7XGAoPt+4Vf+QNXWtqW6yXPTOLohIFLHQop7pJV1Iv8xa33qKBWphKN/NlNh0wak9+vzP4PiAdwe2JVv9CHA05KPY/etfWI4YrljMTfxtS9eBnlT809IM2S1LbI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=gr6iWbfN; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="gr6iWbfN" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 96D771F000FF; Fri, 18 Sep 2026 06:40:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1789713612; bh=hDfUhIaZu4KPqHePo0HBKv6V2o+AaHKMEhi4wd6/0Kw=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=gr6iWbfNeA85FUBO4vzbDmRqzAzqO/U6FyVeujEvSVdtuiMSQXXNP0JJ3mFzxgfxj pQWXc8thrMBiOyfp4JXjDpmnDu0FuuVs99NSQNAVwQTvIoYFpGKuxr+Jce8GRu076W zqPXGkP4aBvOQLE/w+dOcWtZ0KQ1u+DbDPJyuqHfp42X67GKQYTcfpcwjD0tVN9TGn aocNjhWuPZgDolbOCpssn9tVuMGldBcAmIMpOvdlx0Noj9/RAE/8DRuQE1zGdyFBjl nws+0zfzdfG3PL/GpqFg05fhvKhPtsgRAJF/qkvwgGygZtiP3rO0mDqv9JxZrV+h4A mqKeVU6T4oeeg== Message-ID: <23676471-d90c-40cd-a357-e71b3d426425@kernel.org> Date: Fri, 18 Sep 2026 08:40:05 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v5] mm/page_alloc: avoid direct compaction for costly __GFP_NORETRY allocations To: Salvatore Dipietro , hannes@cmpxchg.org, akpm@linux-foundation.org Cc: 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 References: <20260918063203.2802342-1-dipiets@amazon.it> From: "Vlastimil Babka (SUSE)" Content-Language: en-US Autocrypt: addr=vbabka@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit 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. > Thanks, > Salvatore > > > > > AMAZON DEVELOPMENT CENTER ITALY SRL, viale Monte Grappa 3/5, 20124 Milano, Italia, Registro delle Imprese di Milano Monza Brianza Lodi REA n. 2504859, Capitale Sociale: 10.000 EUR i.v., Cod. Fisc. e P.IVA 10100050961, Societa con Socio Unico > > >