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]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 21F26CCF9E0 for ; Fri, 24 Oct 2025 20:35:48 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 720D48E0101; Fri, 24 Oct 2025 16:35:47 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 6D1418E00C9; Fri, 24 Oct 2025 16:35:47 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 5E7308E0101; Fri, 24 Oct 2025 16:35:47 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0013.hostedemail.com [216.40.44.13]) by kanga.kvack.org (Postfix) with ESMTP id 49F3D8E00C9 for ; Fri, 24 Oct 2025 16:35:47 -0400 (EDT) Received: from smtpin09.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay03.hostedemail.com (Postfix) with ESMTP id EF718BE78C for ; Fri, 24 Oct 2025 20:35:46 +0000 (UTC) X-FDA: 84034163892.09.2E8EEFB Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) by imf11.hostedemail.com (Postfix) with ESMTP id 6A08D40009 for ; Fri, 24 Oct 2025 20:35:44 +0000 (UTC) Authentication-Results: imf11.hostedemail.com; dkim=pass header.d=infradead.org header.s=casper.20170209 header.b=K5gTt9g2 ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1761338145; a=rsa-sha256; cv=none; b=zZ8zywUcLlNJMemydiRn9vBbI7EAZ2UVAwW3jhekOW0V6vCO8r3EnNui4wERWRoHCai6Nz fHIigGZqp2zyc3OnPRi7WG5BWHZE5ji6J+YMzsnmpGarrohslw9afOpSxlBoORhVqUWJFv z9QzL0SPYIpWZ+WlodJUszrGS2A/AgY= ARC-Authentication-Results: i=1; imf11.hostedemail.com; dkim=pass header.d=infradead.org header.s=casper.20170209 header.b=K5gTt9g2; spf=none (imf11.hostedemail.com: domain of willy@infradead.org has no SPF policy when checking 90.155.50.34) smtp.mailfrom=willy@infradead.org; dmarc=none ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1761338145; h=from:from:sender: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: in-reply-to:in-reply-to:references:references:dkim-signature; bh=eeXo+CgeDN1hcJ5I7K0VElKLD4LcVB/Am22EAR79xXA=; b=XKvK21YCbmP2IBWL7XaLJ2jKw2wPjzwUDTWHCtQuaw0W1pFmxYyUn/t3FQ+S0NsjVWSzB5 BL6Y5LW6ZziIw9oetOs3gxHLLJy6Ja5ggKWr6DGca3oakMtsUu4iHghYQ5IEjf+hP/kBoV Iky/GD9b86mz6IMieVf9z0Rkn2W1AYE= 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=eeXo+CgeDN1hcJ5I7K0VElKLD4LcVB/Am22EAR79xXA=; b=K5gTt9g2rOXKopZUs47HB/gOK0 3ZKOdJjFiXQwSv+L+GqvHAjvAWzXZbPe9at1Ufbeizwq4gJreYQ0IIB2NdLphzNhMyVLSZfoOnCPJ SHih+/nKRCjaVIoFKZr++pCgZgjVS0bT1GnG2hmsWOgSgTYamkVKosdVi96AjUMXUerIFbClVqM1c gjROpr8wIsOOzgAIcWwvFyvlK+PL0qHcQ6GhUOskUItRB1D1h1wHFEFaTmLkc6VG+pneTXmbFyyO3 eGX612yp/qkmD+7uujxSopgyZZVW/0YkWdq/OnFjrSve4eIaShvesz+o72jTk2ivBGC/8ANIJCCsX Uv0H2zAA==; Received: from willy by casper.infradead.org with local (Exim 4.98.2 #2 (Red Hat Linux)) id 1vCOVa-0000000A8wL-2XqZ; Fri, 24 Oct 2025 20:35:34 +0000 Date: Fri, 24 Oct 2025 21:35:34 +0100 From: Matthew Wilcox To: Dmitry Ilvokhin Cc: Michal Hocko , Andrew Morton , David Hildenbrand , Lorenzo Stoakes , "Liam R. Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Hugh Dickins , Baolin Wang , Kiryl Shutsemau , linux-mm@kvack.org, linux-kernel@vger.kernel.org, kernel-team@meta.com Subject: Re: [PATCH] mm: shmem/tmpfs hugepage defaults config choice Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Rspam-User: X-Stat-Signature: rgbqhcnmz7xkbopqb5ufp9j7nqtm9eud X-Rspamd-Queue-Id: 6A08D40009 X-Rspamd-Server: rspam09 X-HE-Tag: 1761338144-803918 X-HE-Meta: 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 ea8KFUNs E2pSy0qF7GvORJidLm1LZpxuseoDucqey+z2nAYtR7FJMYNvVV81g9IYlSfKSXDJgfJ8rGaqwOTiEGvTtvPgTqdY9GNLd/BFCt3+ioGrpPDo/q/Zd8DCjpUHEfSimP4yMiMb2EJ3pbWPCPI9yYhxJAHlR00KHPAWmE0vpjEgDYG5jPoNRfpUHYoKcVQ== 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: List-Subscribe: List-Unsubscribe: On Fri, Oct 24, 2025 at 11:19:50AM +0000, Dmitry Ilvokhin wrote: > Primary motivation for adding config option is to enable policy > enforcement at build time. In large-scale production environments > (Meta's for example), the kernel configuration is often maintained So you work for Meta? It is poor form to send patches without disclosing your employer. That way, we'd all be able to see that the positive reviews come from your colleagues rather than having it look like everyone's just "oh, i'm a random developer doing this on my own time".