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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id BFEC6C4332F for ; Mon, 22 Nov 2021 20:04:17 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 1EDB16B0071; Mon, 22 Nov 2021 15:04:02 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 19E1D6B0072; Mon, 22 Nov 2021 15:04:02 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 03DE36B0073; Mon, 22 Nov 2021 15:04:01 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0221.hostedemail.com [216.40.44.221]) by kanga.kvack.org (Postfix) with ESMTP id E8A536B0071 for ; Mon, 22 Nov 2021 15:04:01 -0500 (EST) Received: from smtpin05.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id AD65A1828BEFE for ; Mon, 22 Nov 2021 20:03:51 +0000 (UTC) X-FDA: 78837642114.05.E9057CB Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) by imf17.hostedemail.com (Postfix) with ESMTP id E9123F0001EE for ; Mon, 22 Nov 2021 20:03:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=vvLpdHaUFHt3N4gXjtu6QffcwbzuOaP9bKHqPEhJSIU=; b=NSPF2sIpkdz+XiHcIyNY0ST1Jv K2ZNfT306Fy+mxo/Gf2WkwXBKzfrj0dQGgzpV5DJ1nlp+G1p1Ox/c280f/EWTNqP2BOwIQ93Nb4Q+ oTijhwzjuaQcQkzzlQJMnyIrHpDS2zBSohyuHeuRb+KIPlkvdnrdKlHb+bKYtXWSbeTV+cwLYjR8M oWO7W7vsAzy2ZRIUKlI4m4U89oMomMTLskgyvQCWpdOwan2Perc3bQrRuDO1Eq7f+546jmLP0Z+4f VzWfhzURZhSpJA6Db/7pK9oKljfOuDn3scDi+bYonCk1EooQVblVUABFlXF/po/0GLsy4OmHb93aL cEOBoYTg==; Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1mpFXG-00D8NV-R5; Mon, 22 Nov 2021 20:03:30 +0000 Date: Mon, 22 Nov 2021 20:03:30 +0000 From: Matthew Wilcox To: Jens Axboe Cc: David Hildenbrand , Andrew Dona-Couch , Andrew Morton , Drew DeVault , Ammar Faizi , linux-kernel@vger.kernel.org, linux-api@vger.kernel.org, io_uring Mailing List , Pavel Begunkov , linux-mm@kvack.org Subject: Re: [PATCH] Increase default MLOCK_LIMIT to 8 MiB Message-ID: References: <593aea3b-e4a4-65ce-0eda-cb3885ff81cd@gnuweeb.org> <20211115203530.62ff33fdae14927b48ef6e5f@linux-foundation.org> <20211116114727.601021d0763be1f1efe2a6f9@linux-foundation.org> <20211116133750.0f625f73a1e4843daf13b8f7@linux-foundation.org> <8f219a64-a39f-45f0-a7ad-708a33888a3b@www.fastmail.com> <333cb52b-5b02-648e-af7a-090e23261801@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Stat-Signature: xgiotqtx1yg8seg3pjetgtwg5m1srcfr X-Rspamd-Queue-Id: E9123F0001EE X-Rspamd-Server: rspam07 Authentication-Results: imf17.hostedemail.com; dkim=pass header.d=infradead.org header.s=casper.20170209 header.b=NSPF2sIp; spf=none (imf17.hostedemail.com: domain of willy@infradead.org has no SPF policy when checking 90.155.50.34) smtp.mailfrom=willy@infradead.org; dmarc=none X-HE-Tag: 1637611430-354215 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 Mon, Nov 22, 2021 at 12:53:31PM -0700, Jens Axboe wrote: > We should just make this 0.1% of RAM (min(0.1% ram, 64KB)) or something > like what was suggested, if that will help move things forward. IMHO the > 32MB machine is mostly a theoretical case, but whatever . I think you mean max(0.1% ram, 64KB). with that change, I agree.