Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261426AbUDGIaz (ORCPT ); Wed, 7 Apr 2004 04:30:55 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261830AbUDGIaz (ORCPT ); Wed, 7 Apr 2004 04:30:55 -0400 Received: from gate.crashing.org ([63.228.1.57]:58803 "EHLO gate.crashing.org") by vger.kernel.org with ESMTP id S261426AbUDGIay (ORCPT ); Wed, 7 Apr 2004 04:30:54 -0400 Subject: Re: RFC: COW for hugepages From: Benjamin Herrenschmidt To: Andrew Morton Cc: David Gibson , Linux Kernel list , Anton Blanchard , Paul Mackerras , linuxppc64-dev In-Reply-To: <20040407005353.45323dcd.akpm@osdl.org> References: <20040407074239.GG18264@zax> <20040407005353.45323dcd.akpm@osdl.org> Content-Type: text/plain Message-Id: <1081326594.1382.54.camel@gaston> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.6 Date: Wed, 07 Apr 2004 18:29:54 +1000 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 773 Lines: 22 On Wed, 2004-04-07 at 17:53, Andrew Morton wrote: > David Gibson wrote: > > > > Doing the COW for hugepages turns out not to be terribly difficult. > > Is there any reason not to apply this patch? > > Not much, except that it adds stuff to the kernel. > > Does anyone actually have a real-world need for the feature? Yup, porting some apps to use hugepages, when those apps rely on fork & cow semantics typically. Also, implicit use of hugepages (usually via a malloc override library). Ben. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/