From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail202.messagelabs.com (mail202.messagelabs.com [216.82.254.227]) by kanga.kvack.org (Postfix) with SMTP id 8D4146B006A for ; Wed, 20 Jan 2010 22:06:07 -0500 (EST) Received: by pwj10 with SMTP id 10so4415018pwj.6 for ; Wed, 20 Jan 2010 19:06:06 -0800 (PST) MIME-Version: 1.0 In-Reply-To: <20100121013205.GA29808@shareable.org> References: <20100120174630.4071.A69D9226@jp.fujitsu.com> <20100120095242.GA5672@desktop> <20100121094733.3778.A69D9226@jp.fujitsu.com> <20100121013205.GA29808@shareable.org> Date: Thu, 21 Jan 2010 11:06:03 +0800 Message-ID: <979dd0561001201906j5acedd8ay42d7bc68beefbb9e@mail.gmail.com> Subject: Re: cache alias in mmap + write From: anfei zhou Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Sender: owner-linux-mm@kvack.org To: Jamie Lokier Cc: KOSAKI Motohiro , linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux@arm.linux.org.uk List-ID: On Thu, Jan 21, 2010 at 9:32 AM, Jamie Lokier wrote: > KOSAKI Motohiro wrote: >> =A02. Add some commnet. almost developer only have x86 machine. so, arm >> =A0 =A0 specific trick need additional explicit explanation. otherwise a= nybody >> =A0 =A0 might break this code in the future. > > That's Documentation/cachetlb.txt. > > What's being discussed here is not ARM-specific, although it appears > maintainers of different architecture (ARM and MIPS for a start) may > have different ideas about what they are guaranteeing to userspace. > It sounds like MIPS expects userspace to use msync() sometimes (even > though Linux msync(MS_INVALIDATE) is quite broken), and ARM expects to > to keep mappings coherent automatically (which is sometimes slower > than necessary, but usually very helpful). > >> =A03. Resend the patch. original mail isn't good patch format. please >> =A0consider to reduce akpm suffer. > > This type of change in generic code would need review from a number of > architecture maintainers, I'd expect. > So should I broadcast this mail in order to get their attentions, linux-arch@vger.kernel.org? Thanks! > -- Jamie > -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org