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 9EE1F38AC6A; Fri, 18 Sep 2026 21:35:03 +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=1789767304; cv=none; b=hu3dlsm4FGD1N8Tsdk1QAGTV7A3reP6UBBiII4b3zdPPorixRj1bTEGKQK5Ehfpkld6cP/8zYK1N9JgwC4JgdJ3OQhA7EuxKIzO35f2kqNMleuilXbcp3GgXuAjiwmQr3FgRoZqo+X09w5PpSpxoYgjeWLKuZChj/oLbJhYFfiY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789767304; c=relaxed/simple; bh=NIMK8UH78gzW0ExsqRycQX21cVR/xFMXkxs3i+XwKkA=; h=Date:From:To:Cc:Subject:Message-Id:In-Reply-To:References: Mime-Version:Content-Type; b=eSCBQ6SMp+DsInrfpsdkImDsC7SLK4RrHYsyak6T/iduZUR/sYsyK6HCoh+wVswgoxbDasvLxP+kcFgAiyJ/hjgBoxVp6vhuOXzfxBCzKUYw2F9M6Zln+cwZSX37gTyBm9pOV6Emm+e0zt1p1cZb/9zqrV4CoSvO2ToS2BqPqew= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=YaJzyj12; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="YaJzyj12" Received: by smtp.kernel.org (Postfix) with ESMTPSA id AE40B1F000FF; Fri, 18 Sep 2026 21:35:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1789767303; bh=LzrOWb7USfc3PFDPqWSCCytYQOmFmHMArNmcS4CbPM4=; h=Date:From:To:Cc:Subject:In-Reply-To:References; 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) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit 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.