Received: by 2002:a05:6a10:5bc5:0:0:0:0 with SMTP id os5csp1583498pxb; Wed, 20 Oct 2021 07:55:45 -0700 (PDT) X-Google-Smtp-Source: ABdhPJygiq4qw8v23WpjE4Dq+B1ZTwF/kAffGMGcqC8VhJaDdxJrJqnr3JtaWde0Gt7pMAqDr/VE X-Received: by 2002:a63:8f4c:: with SMTP id r12mr392473pgn.0.1634741745426; Wed, 20 Oct 2021 07:55:45 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1634741745; cv=none; d=google.com; s=arc-20160816; b=QQEr4WToc4eoIbLLxr1uSEN4pe3jB2W67FrZ8cZa/99vG844xn+ZoLRLldCONAy0gX Mlg+W6LfJNuuztAJddKyEbHe7dfMWqxfUfte90X6WGRH1lveXgChC6jJW1Xi4WfHnXv9 bLmR4K+v0APln2WdpfgHcAKsfWhpq0z0e0+U70G7xL6oXO4oLf35UWPCsYdWQeG7ZbsN LqXk0ukH6lx54Chb/NO+kDnmUOLuF1lgZpTm9Lrqd1/uwI9ozUdSMIzumfZXNX0cOUS4 KeccGudORqj1aERdtc20OHgxgL0KrBhFkAivrx/o/x8QdVVi+SPKeKjOM1UXCeGnVlF3 rW5A== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:in-reply-to:content-disposition:mime-version :references:message-id:subject:cc:to:from:date:dkim-signature; bh=O8bh/JNAXl0EbyJbdZo/SNAN5DDfXJOs+3Sv4Zhg3O0=; b=L6qrlIFcjSQgCOWf248RyqYkjqrDx2MhOhbqVeAhHIx4KbLMifbeqE4oWpUJbyumhX rBp7yEJ7rlt+TD04vLOmxfjm0EtWNr9qZOeK5h7aDHRq8FtQ1FZWFyyd9UXht4T+nFD3 k5eNcCq1W4J7Es4VHTO32l2ZAXsr2t4NfFE8wAVoUUW9+2abLAn3YEESV0IlIdq/mUK0 z6TzwNDmBHnv2RcCAYIV1msYlnkJmvZ64tntDg1/E4Pxw/KVFeSMEkGoZGUd40wPxCOr wSTIelyRkvw4yGquukul7/Ftl5pfMLR32ZOrotdyIe2l3PQbysc+AcAnUnHdxu/g1LRZ +/Ww== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@suse.com header.s=susede1 header.b=JNuzYGOd; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=NONE dis=NONE) header.from=suse.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id s16si3590454pgi.284.2021.10.20.07.55.31; Wed, 20 Oct 2021 07:55:45 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@suse.com header.s=susede1 header.b=JNuzYGOd; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=NONE dis=NONE) header.from=suse.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230314AbhJTOzh (ORCPT + 99 others); Wed, 20 Oct 2021 10:55:37 -0400 Received: from smtp-out2.suse.de ([195.135.220.29]:57592 "EHLO smtp-out2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229695AbhJTOzh (ORCPT ); Wed, 20 Oct 2021 10:55:37 -0400 Received: from relay2.suse.de (relay2.suse.de [149.44.160.134]) by smtp-out2.suse.de (Postfix) with ESMTP id E98501FD39; Wed, 20 Oct 2021 14:53:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1634741601; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=O8bh/JNAXl0EbyJbdZo/SNAN5DDfXJOs+3Sv4Zhg3O0=; b=JNuzYGOdhvILbvr1KUKHON8SPNEtIYfQGJdkWNYg1JDgt0nR62uMVJsWzaoch0RR0SYaSI +sne66bRJbe3TmoUNFJipcrvIo7neOd2/V1lwq+pX1HQMCUxHBM3oEG7zQwUiet9EvgJzo ZYFX0rKorRDJlOGgEyXwlNpV98Smzj8= Received: from suse.cz (unknown [10.100.201.86]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by relay2.suse.de (Postfix) with ESMTPS id 3E579A3B83; Wed, 20 Oct 2021 14:53:21 +0000 (UTC) Date: Wed, 20 Oct 2021 16:53:20 +0200 From: Michal Hocko To: Uladzislau Rezki Cc: Linux Memory Management List , Dave Chinner , Neil Brown , Andrew Morton , Christoph Hellwig , linux-fsdevel@vger.kernel.org, LKML , Ilya Dryomov , Jeff Layton Subject: Re: [RFC 2/3] mm/vmalloc: add support for __GFP_NOFAIL Message-ID: References: <20211018114712.9802-1-mhocko@kernel.org> <20211018114712.9802-3-mhocko@kernel.org> <20211019110649.GA1933@pc638.lan> <20211019194658.GA1787@pc638.lan> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed 20-10-21 16:29:14, Uladzislau Rezki wrote: > On Wed, Oct 20, 2021 at 4:06 PM Michal Hocko wrote: [...] > > As I've said I am OK with either of the two. Do you or anybody have any > > preference? Without any explicit event to wake up for neither of the two > > is more than just an optimistic retry. > > > From power perspective it is better to have a delay, so i tend to say > that delay is better. I am a terrible random number generator. Can you give me a number please? -- Michal Hocko SUSE Labs