Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751717AbWEIJDb (ORCPT ); Tue, 9 May 2006 05:03:31 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751718AbWEIJDb (ORCPT ); Tue, 9 May 2006 05:03:31 -0400 Received: from smtp101.mail.mud.yahoo.com ([209.191.85.211]:10151 "HELO smtp101.mail.mud.yahoo.com") by vger.kernel.org with SMTP id S1751549AbWEIJDa (ORCPT ); Tue, 9 May 2006 05:03:30 -0400 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com.au; h=Received:Message-ID:Date:From:User-Agent:X-Accept-Language:MIME-Version:To:CC:Subject:References:In-Reply-To:Content-Type:Content-Transfer-Encoding; b=ly1srG8xVAqep8UWnZFheuwSe9j736Bdwy7KDyQNRGOlA8mIVUO9eV1EaUOCnaJqrn1xIc+nXlYwxl3qbZZfhx2qPmfYUZ0aTf9fepLdhLiHpY4zyL9odj7L3G1sbhwZEScgj1TRni2Ii+g5HCz0eco9pNeNdM43GUpaYh+AOOk= ; Message-ID: <4460389E.80402@yahoo.com.au> Date: Tue, 09 May 2006 16:37:18 +1000 From: Nick Piggin User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.8) Gecko/20050831 Debian/1.7.8-1sarge2 X-Accept-Language: en MIME-Version: 1.0 To: Manfred Spraul CC: Christoph Lameter , Pekka Enberg , Linus Torvalds , Daniel Hokka Zakrisson , linux-kernel@vger.kernel.org, =?ISO-8859-1?Q?Bj=F6rn_Steinbrink?= , greg@kroah.com, matthew@wil.cx, akpm@osdl.org Subject: Re: [PATCH] fs: fcntl_setlease defies lease_init assumptions References: <445E80DD.9090507@hozac.com> <84144f020605080131r58ce2a93w6c7ba784a266bbeb@mail.gmail.com> <84144f020605080134q7e16f37fl385359c634ece8ca@mail.gmail.com> <1147104412.22096.8.camel@localhost> <1147116991.11282.3.camel@localhost> <44603543.8070205@colorfullife.com> In-Reply-To: <44603543.8070205@colorfullife.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 754 Lines: 24 Manfred Spraul wrote: > Christoph Lameter wrote: > >> virt_to_page is not cheap on NUMA. >> >> >> > I know. But it was a design assumption when I wrote the slab allocator. > Acutally, it's not cheap on non-NUMA either. And the PageCompound() > check adds an additional branch. Just FYI, the PageCompound check can go as soon as nommu stops trying to do its broken page refcounting on slab pages (whenever that happens :P). -- Send instant messages to your online friends http://au.messenger.yahoo.com - 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/