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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2E3B7C433F5 for ; Mon, 22 Nov 2021 20:03:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240412AbhKVUHC (ORCPT ); Mon, 22 Nov 2021 15:07:02 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38202 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231137AbhKVUGx (ORCPT ); Mon, 22 Nov 2021 15:06:53 -0500 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 64893C061574; Mon, 22 Nov 2021 12:03:45 -0800 (PST) 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: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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.