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 D4391C43217 for ; Tue, 16 Nov 2021 19:25:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BAC416322C for ; Tue, 16 Nov 2021 19:25:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239916AbhKPT2g (ORCPT ); Tue, 16 Nov 2021 14:28:36 -0500 Received: from out0.migadu.com ([94.23.1.103]:47314 "EHLO out0.migadu.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229663AbhKPT2f (ORCPT ); Tue, 16 Nov 2021 14:28:35 -0500 MIME-Version: 1.0 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cmpwn.com; s=key1; t=1637090734; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=NH4D06+wvki1Y2o8G9uIKdZSfom0w6wnccvPwaGoNTQ=; b=tC1QclNLGPZYG5G+lNBUu61UJQoA9aD6mERtdhl9mxWXld6jHcG39WfFWPkGgYDgX9hYva JBRnijENUJGIvCEjF0s3QXXdwgG8+cPey/+vjUSO+xevG07WiuwOwkHMiWmQxslOweAY9+ YKIgiIwhCh1/YmseHtmKc/sxvw6Pyw+liAK7Mmjhj1M2V04m4wMfm6qQ4UzAMT5qU6fYc+ dhyqsi7KqM+xDTLD55r2/gEymAt1xTQb2DUPYuuU8QfSxkwA3JVi1tyvD6e95Xys2ZAU84 44YhrkldU32fCmxtoRnPAV+hFr0lsyxdCnWK+XwfvrnV4XfUX4lLE5V1q4bw3Q== Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 Date: Tue, 16 Nov 2021 20:25:33 +0100 Message-Id: Subject: Re: [PATCH] Increase default MLOCK_LIMIT to 8 MiB X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. From: "Drew DeVault" To: "Vito Caputo" , "Jens Axboe" Cc: "Matthew Wilcox" , "Andrew Morton" , "Ammar Faizi" , , , "io_uring Mailing List" , "Pavel Begunkov" , References: <20211028080813.15966-1-sir@cmpwn.com> <593aea3b-e4a4-65ce-0eda-cb3885ff81cd@gnuweeb.org> <20211115203530.62ff33fdae14927b48ef6e5f@linux-foundation.org> <20211116192148.vjdlng7pesbgjs6b@shells.gnugeneration.com> In-Reply-To: <20211116192148.vjdlng7pesbgjs6b@shells.gnugeneration.com> X-Migadu-Flow: FLOW_OUT X-Migadu-Auth-User: sir@cmpwn.com Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue Nov 16, 2021 at 8:21 PM CET, Vito Caputo wrote: > Considering a single fullscreen 32bpp 4K-resolution framebuffer is > ~32MiB, I'm not convinced this is really correct in nearly 2022. Can you name a practical use-case where you'll be doing I/O with uncompressed 4K framebuffers? The kind of I/O which is supported by io_uring, to be specific, not, say, handing it off to libdrm.