From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 56A38C433EF for ; Wed, 20 Oct 2021 15:01:59 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id E98C260FDA for ; Wed, 20 Oct 2021 15:01:58 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org E98C260FDA Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kvack.org Received: by kanga.kvack.org (Postfix) id 6FD476B0071; Wed, 20 Oct 2021 11:01:58 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 6ACB56B0072; Wed, 20 Oct 2021 11:01:58 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 5A2446B0075; Wed, 20 Oct 2021 11:01:58 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0045.hostedemail.com [216.40.44.45]) by kanga.kvack.org (Postfix) with ESMTP id 4BF286B0071 for ; Wed, 20 Oct 2021 11:01:58 -0400 (EDT) Received: from smtpin28.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 022D38249980 for ; Wed, 20 Oct 2021 15:01:58 +0000 (UTC) X-FDA: 78717130716.28.D444947 Received: from mail-ed1-f43.google.com (mail-ed1-f43.google.com [209.85.208.43]) by imf19.hostedemail.com (Postfix) with ESMTP id 6B708B000186 for ; Wed, 20 Oct 2021 15:01:53 +0000 (UTC) Received: by mail-ed1-f43.google.com with SMTP id a25so27010969edx.8 for ; Wed, 20 Oct 2021 08:01:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=9wMp6KN4Bl+/16uqAJTSTlwVNnmq+6gMGHhM2eIoSfA=; b=fmuQ1cL1GdQSimrx3H9sCqboDYsk+VgaxYKz/UJYH7UGStaXBiW3Si6588drQZ3Dkf q+HubfDdEvrLyHoG8F7+oW1PWgFvXlNzgq/wvmnrlRW1qVO6aVpaqX151FxoktfWyGTi M1yiY0CLI8lq3WNpFX9CO+moKoFftbseEebm8Pg40W5ctMF2JwG4PgcD6wp5l6o2hNgY FH/TY3gK/2aWdNx8zfF2LgyepAQvS+IvAzZOiVGoY63M/mC5XxjEwY1AKvreVgt2wOp0 uo6VDnR4YM5a6PEo2cI08Rs8RNJMP3IU849PnbcThybJCWGto/vhHfkV/UEw9z0LsH9K Y7xw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=9wMp6KN4Bl+/16uqAJTSTlwVNnmq+6gMGHhM2eIoSfA=; b=G8U7nWMD7girt8X9GxGNkOpNAuCEB3EspQ5QBmTK9G450HLW1iGxXgry3HK5SDD9LZ brGT/krxFB0K5IF0jiGJY4VUfH9fz3qFdTEeltMrJvCSAyfE8m4+jh65JBZ/MgfDxwf0 dVkakyEmIcERETHsq1BcycuLAlLCzPYRH6AfyNYIXqlTetz/N1NeYfQk/CGDV228kOej gHPFy/3C2mNOlajP2hlqln5m9YH06l6Weni6yQPMzM5I/DYKWHwWe7v7a3cH7Hcn/VeM X6puv2dqp3G8Edf2ENuVSau6TbpX8wqb0VFD1DU58TSg+kwkURdKc/WUSabyeh+f38kh UogQ== X-Gm-Message-State: AOAM530C92BNa37mWgrOFOTtG54dbHQ5KywkjgBnm9Q5xv+k/sg+x3hw ZSPR6FmZjsH68A8XErbEqVNa/0EzTCEAZCOU0kc= X-Google-Smtp-Source: ABdhPJwyjH71/Vo6YOX6/jcjTOh0kzwHB52ML2RdNItKGmpS3BW9iLetdM5gO10tdQ0IFkcsRbXRJACFfzlBRLxtP3A= X-Received: by 2002:a50:e009:: with SMTP id e9mr634164edl.254.1634742039339; Wed, 20 Oct 2021 08:00:39 -0700 (PDT) MIME-Version: 1.0 References: <20211018114712.9802-1-mhocko@kernel.org> <20211018114712.9802-3-mhocko@kernel.org> <20211019110649.GA1933@pc638.lan> <20211019194658.GA1787@pc638.lan> In-Reply-To: From: Uladzislau Rezki Date: Wed, 20 Oct 2021 17:00:28 +0200 Message-ID: Subject: Re: [RFC 2/3] mm/vmalloc: add support for __GFP_NOFAIL To: Michal Hocko Cc: Linux Memory Management List , Dave Chinner , Neil Brown , Andrew Morton , Christoph Hellwig , linux-fsdevel@vger.kernel.org, LKML , Ilya Dryomov , Jeff Layton Content-Type: text/plain; charset="UTF-8" X-Stat-Signature: d6jffmibr1gy3e9nqizictrn6u1qsrq4 Authentication-Results: imf19.hostedemail.com; dkim=pass header.d=gmail.com header.s=20210112 header.b=fmuQ1cL1; spf=pass (imf19.hostedemail.com: domain of urezki@gmail.com designates 209.85.208.43 as permitted sender) smtp.mailfrom=urezki@gmail.com; dmarc=pass (policy=none) header.from=gmail.com X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: 6B708B000186 X-HE-Tag: 1634742113-754528 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: > > 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? > Well, we can start from one jiffy so it is one timer tick: schedule_timeout(1) -- Uladzislau Rezki