From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from pdx-out-008.esa.us-west-2.outbound.mail-perimeter.amazon.com (pdx-out-008.esa.us-west-2.outbound.mail-perimeter.amazon.com [52.42.203.116]) (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 05E385C613; Fri, 18 Sep 2026 06:32:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=52.42.203.116 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789713145; cv=none; b=iuiiU7DlQBVdBf6XOJQoAsQTdtWX+wyFVOLvXJfdIkm7EKtZG6bnCM9YJrGE8+3udExOYc9soZKpihu2SBG6lPWTE0rXZGo1m5a+ZXVKH6yhOFynoYHaBcgTh9Y9r5BJvDp+xnr8EBqRwyIAhLsJrEfYQ2Qr/l8GQrDeQ7kYY5s= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789713145; c=relaxed/simple; bh=v1VBUuCGiCGHn6DMhi3GFEqygj/aAsvMykxntaLG+rE=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=IjQ/bMQt8pezcSLlU2ft9ALJxXyEiYqBCqXZ2fhlF+G6i4xGyc2SCmnEFHIos7JRAxPV74wmVNw9+67lYLP5W9lU+fMBouTztmEpODh9kZIv/XsqcP78PG4ajs79cg/dXjxrUyhUCJyUYf8v2eZzNOhLzfuaFWjp8zPZzg4crsI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=amazon.it; spf=pass smtp.mailfrom=amazon.it; dkim=pass (2048-bit key) header.d=amazon.it header.i=@amazon.it header.b=e4SeXKS9; arc=none smtp.client-ip=52.42.203.116 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=amazon.it Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=amazon.it Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=amazon.it header.i=@amazon.it header.b="e4SeXKS9" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.it; i=@amazon.it; q=dns/txt; s=amazoncorp2; t=1789713144; x=1821249144; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=v1VBUuCGiCGHn6DMhi3GFEqygj/aAsvMykxntaLG+rE=; b=e4SeXKS9RoBo+P9LsLnDPT7XL5EmTXjJZf1NVlo1WtkbWd3GjgVgiHG0 g2qD8/nDSo/11utVzYWmWWfoGIQS6CoB8FhC6GkEWmHr8z9HiwbKmLXVx ka6GrZc/xQHFH8yA3L5EZJLfw9B3ZylDy5woWRZWPMtQ7JUAzrfnkD67/ jicnp8I/+jHvvj8tidyxdG4ZKBR5KsyT9ruPbeW29A7KVuPtgR992tJj7 kMN55VhPh4GEr28PD6nHxeFSEep9l3fHur5M74xn7eZvkU4xRcVyuM0Od WyIphZ3jcD/SqtRbnS2dA6dADcHMIw4UlyGEQV36lq05wo+ek6ik9fFfm g==; X-CSE-ConnectionGUID: grg7F6DNQJqEHQap4KfNQg== X-CSE-MsgGUID: Zvmx89DtROO9zU5quSqcRw== X-IronPort-AV: E=Sophos;i="6.27,103,1787011200"; d="scan'208";a="29037761" Received: from ip-10-5-0-115.us-west-2.compute.internal (HELO smtpout.naws.us-west-2.prod.farcaster.email.amazon.dev) ([10.5.0.115]) by internal-pdx-out-008.esa.us-west-2.outbound.mail-perimeter.amazon.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Sep 2026 06:32:20 +0000 Received: from EX19MTAUWA001.ant.amazon.com [205.251.233.182:4831] by smtpin.naws.us-west-2.prod.farcaster.email.amazon.dev [10.0.35.200:2525] with esmtp (Farcaster) id d6faa5cd-2b7e-433d-abc2-14217cad7632; Fri, 18 Sep 2026 06:32:20 +0000 (UTC) X-Farcaster-Flow-ID: d6faa5cd-2b7e-433d-abc2-14217cad7632 Received: from EX19D001UWA001.ant.amazon.com (10.13.138.214) by EX19MTAUWA001.ant.amazon.com (10.250.64.218) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA) id 15.2.2562.46; Fri, 18 Sep 2026 06:32:19 +0000 Received: from dev-dsk-dipiets-1b-77b833da.eu-west-1.amazon.com (10.253.66.177) by EX19D001UWA001.ant.amazon.com (10.13.138.214) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA) id 15.2.2562.46; Fri, 18 Sep 2026 06:32:15 +0000 From: Salvatore Dipietro To: , CC: , , , , , , , , , , , , , , , , , , , , , , , , , Subject: Re: [PATCH v5] mm/page_alloc: avoid direct compaction for costly __GFP_NORETRY allocations Date: Fri, 18 Sep 2026 06:32:03 +0000 Message-ID: <20260918063203.2802342-1-dipiets@amazon.it> X-Mailer: git-send-email 2.50.1 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: EX19D038UWC002.ant.amazon.com (10.13.139.238) To EX19D001UWA001.ant.amazon.com (10.13.138.214) Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit 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. 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