From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <3D33371D.6003AAAE@zip.com.au> Date: Mon, 15 Jul 2002 13:57:01 -0700 From: Andrew Morton MIME-Version: 1.0 Subject: Re: [PATCH] Optimize away pte_chains for single mappings References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Daniel Phillips Cc: Rik van Riel , Matti Aarnio , Dave McCracken , Linux Memory Management List-ID: Daniel Phillips wrote: > > On Monday 15 July 2002 18:34, Rik van Riel wrote: > > On Mon, 15 Jul 2002, Daniel Phillips wrote: > > > > > None of these cases apply, the low bit is always masked off before being > > > used as a pointer. > > > > Too ugly to live. > > That's a nonargument. I presume you weren't able to think of a > substantive reason. How about "Linus will roast our nuts if we do that"? Plus accessing the same storage with both atomic and non-atomic ops may be a problem on some hardware. Let's wait until we run out of page flags first... - -- 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/