From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <dj@redhat.com>
Received: from us-smtp-delivery-124.mimecast.com
 (us-smtp-delivery-124.mimecast.com [216.205.24.124])
 by sourceware.org (Postfix) with ESMTPS id 4CFEA3858C60
 for <libc-alpha@sourceware.org>; Tue,  2 Nov 2021 00:41:55 +0000 (GMT)
DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 4CFEA3858C60
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-443-5a0FGBhaN6i_-FBW2WGdhg-1; Mon, 01 Nov 2021 20:41:53 -0400
X-MC-Unique: 5a0FGBhaN6i_-FBW2WGdhg-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 9BBA3806688;
 Tue,  2 Nov 2021 00:41:52 +0000 (UTC)
Received: from greed.delorie.com (ovpn-112-90.phx2.redhat.com [10.3.112.90])
 by smtp.corp.redhat.com (Postfix) with ESMTPS id 6855B2B0B8;
 Tue,  2 Nov 2021 00:41:52 +0000 (UTC)
Received: from greed.delorie.com.redhat.com (localhost [127.0.0.1])
 by greed.delorie.com (8.15.2/8.15.2) with ESMTP id 1A20RGd81821698;
 Mon, 1 Nov 2021 20:27:46 -0400
From: DJ Delorie <dj@redhat.com>
To: Patrick McGehearty <patrick.mcgehearty@oracle.com>
Cc: libc-alpha@sourceware.org
Subject: Re: [PATCH v2] Remove upper limit on tunable MALLOC_MMAP_THRESHOLD
In-Reply-To: <1635803327-25346-1-git-send-email-patrick.mcgehearty@oracle.com>
Date: Mon, 01 Nov 2021 20:27:16 -0400
Message-ID: <xntugv8krf.fsf@greed.delorie.com>
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
X-Spam-Status: No, score=-6.6 required=5.0 tests=BAYES_00, DKIMWL_WL_HIGH,
 DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, RCVD_IN_DNSWL_LOW,
 RCVD_IN_MSPIKE_H2, SPF_HELO_NONE, SPF_NONE,
 TXREP autolearn=ham autolearn_force=no version=3.4.4
X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on
 server2.sourceware.org
X-BeenThere: libc-alpha@sourceware.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Libc-alpha mailing list <libc-alpha.sourceware.org>
List-Unsubscribe: <https://sourceware.org/mailman/options/libc-alpha>,
 <mailto:libc-alpha-request@sourceware.org?subject=unsubscribe>
List-Archive: <https://sourceware.org/pipermail/libc-alpha/>
List-Post: <mailto:libc-alpha@sourceware.org>
List-Help: <mailto:libc-alpha-request@sourceware.org?subject=help>
List-Subscribe: <https://sourceware.org/mailman/listinfo/libc-alpha>,
 <mailto:libc-alpha-request@sourceware.org?subject=subscribe>
X-List-Received-Date: Tue, 02 Nov 2021 00:41:56 -0000


If mmap_threshold is greater than heap_max, what happens when you
allocate a chunk between those two sizes?