From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Wed, 4 Apr 2007 14:27:01 +0200 From: Andrea Arcangeli Subject: Re: [rfc] no ZERO_PAGE? Message-ID: <20070404122701.GB19587@v2.random> References: <20070329075805.GA6852@wotan.suse.de> <20070330024048.GG19407@wotan.suse.de> <20070404033726.GE18507@wotan.suse.de> <20070404102407.GA529@wotan.suse.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20070404102407.GA529@wotan.suse.de> Sender: owner-linux-mm@kvack.org Return-Path: To: Nick Piggin Cc: Hugh Dickins , Andrew Morton , Linus Torvalds , Linux Memory Management List , tee@sgi.com, holt@sgi.com, Linux Kernel Mailing List List-ID: On Wed, Apr 04, 2007 at 12:24:07PM +0200, Nick Piggin wrote: > But for a potential mainline merge, maybe starting with a CONFIG > option is a good idea -- defaulting to off, and we could start by > turning it on just in -rc kernels for a few releases, to get a bit > more confidence? The only reason to do that is if there are many stupid apps pretending to get meaningful information from pages that cannot contain any information. The zero page in the anon page fault has been there forever so... Anyway I also like this approach as I immediately suggested it after reading about the zero page scalability patches ;). -- 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