From mboxrd@z Thu Jan 1 00:00:00 1970 From: Al Viro Subject: Re: [git pull] uaccess-related bits of vfs.git Date: Sat, 13 May 2017 20:17:04 +0100 Message-ID: <20170513191704.GC390@ZenIV.linux.org.uk> References: <20170501034536.GX29622@ZenIV.linux.org.uk> <20170513065745.GV390@ZenIV.linux.org.uk> <20170513170056.GX390@ZenIV.linux.org.uk> <20170513180413.GZ390@ZenIV.linux.org.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from zeniv.linux.org.uk ([195.92.253.2]:42002 "EHLO ZenIV.linux.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751877AbdEMTRG (ORCPT ); Sat, 13 May 2017 15:17:06 -0400 Content-Disposition: inline In-Reply-To: Sender: linux-arch-owner@vger.kernel.org List-ID: To: Linus Torvalds Cc: Linux Kernel Mailing List , "linux-arch@vger.kernel.org" On Sat, May 13, 2017 at 12:00:10PM -0700, Linus Torvalds wrote: > On Sat, May 13, 2017 at 11:04 AM, Al Viro wrote: > > > > > > My point is, this stuff needs looking at. > > No. > > You don't have a point. I've tried to explain that there's no > performance difference, and there is no way in hell that the current > "__" versions are better. > > So what's the point in looking? All you are ever going to come up with > is theoretical "this might" cases. Umm... Just during this subthread - a couple of likely breakages in xen (which would need looking into, right?) and "oopsen on alpha would stop actually printing code", which is better to spot early. The first one might be theoretical, but it's worth giving heads-up to xen folks; I'm fairly sure that this spot will break. The second is not theoretical at all - it *will* break.