From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Mon, 29 Jan 2007 12:03:25 -0800 From: Andrew Morton Subject: Re: [patch] mm: mremap correct rmap accounting Message-Id: <20070129120325.26707d26.akpm@osdl.org> In-Reply-To: References: <45B61967.5000302@yahoo.com.au> <45BD6A7B.7070501@yahoo.com.au> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Linus Torvalds Cc: Hugh Dickins , Nick Piggin , Linux Memory Management , Ralf Baechle List-ID: On Mon, 29 Jan 2007 11:27:56 -0800 (PST) Linus Torvalds wrote: > > > On Mon, 29 Jan 2007, Hugh Dickins wrote: > > > On Mon, 29 Jan 2007, Nick Piggin wrote: > > > > > > OK, how's this one? > > > > Grudging okay - so irritating to have to do this! > > I really hate it. Like REALLY REALLY hate it. > > This just seems really stupid. > > How about making the zero-page on MIPS be PageCompound(), and then have > all the sub-pages just point to the first page - that's how compound pages > work anyway. > Can we convert those bits of mips to just have a single zero-page, like everyone else? Is that trick a correctness thing, or a performance thing? If the latter, how useful is it, and how common are the chips which use it? -- 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