From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from us-smtp-delivery-1.mimecast.com (us-smtp-1.mimecast.com [205.139.110.61]) by sourceware.org (Postfix) with ESMTP id 5C2F4383F852 for ; Mon, 4 May 2020 21:07:18 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org 5C2F4383F852 Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-176-ME4qpnFJPcaGQCf18fT7-Q-1; Mon, 04 May 2020 17:07:14 -0400 X-MC-Unique: ME4qpnFJPcaGQCf18fT7-Q-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id F0A89835B40; Mon, 4 May 2020 21:07:12 +0000 (UTC) Received: from greed.delorie.com (ovpn-112-52.phx2.redhat.com [10.3.112.52]) by smtp.corp.redhat.com (Postfix) with ESMTPS id C3A9F7052A; Mon, 4 May 2020 21:07:12 +0000 (UTC) Received: from greed.delorie.com.redhat.com (localhost [127.0.0.1]) by greed.delorie.com (8.14.7/8.14.7) with ESMTP id 044L7B1l024185; Mon, 4 May 2020 17:07:11 -0400 From: DJ Delorie To: Norbert Manthey Cc: libc-alpha@sourceware.org Subject: Re: [[RFC][PATCH] v1 0/2] malloc/realloc with transparent huge page support In-Reply-To: <20200503220708.2048246-1-nmanthey@conp-solutions.com> (message from Norbert Manthey on Mon, 4 May 2020 00:07:06 +0200) Date: Mon, 04 May 2020 17:07:11 -0400 Message-ID: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain Content-Transfer-Encoding: quoted-printable X-Spam-Status: No, score=-10.9 required=5.0 tests=BAYES_00, DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, RCVD_IN_DNSWL_NONE, RCVD_IN_MSPIKE_H2, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-BeenThere: libc-alpha@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libc-alpha mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 04 May 2020 21:07:25 -0000 Norbert Manthey writes: > I have been looking for a way to enable huge pages in a user land process > without privileges, and without modifying the source of the process. In addition to the other feedback you've gotten, I'll point out some administrivia... * Non-trivial patches require a copyright assignment before we can act on them (really, before we should even look at them). The process is easy and we can help you though it, but it does take time. * Patches should be against current master and use the latest conventions (like tunables) - at least, by the time you want them included. 2.23 is "ancient" for us and a lot has changed in the malloc code since then. Your findings from that version may not be the same as findings against master.