From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Thu, 23 Sep 2004 16:27:13 -0700 From: William Lee Irwin III Subject: Re: [Patch/RFC]Removing zone and node ID from page->flags[0/3] Message-ID: <20040923232713.GJ9106@holomorphy.com> References: <20040923135108.D8CC.YGOTO@us.fujitsu.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20040923135108.D8CC.YGOTO@us.fujitsu.com> Sender: owner-linux-mm@kvack.org Return-Path: To: Yasunori Goto Cc: linux-mm , Linux Kernel ML , Linux Hotplug Memory Support List-ID: On Thu, Sep 23, 2004 at 03:55:16PM -0700, Yasunori Goto wrote: > I updated my patches which remove zone and node ID from page->flags. > Page->flags is 32bit space and 19 bits of them have already been used on > 2.6.9-rc2-mm2 kernel, and zone and node ID uses 8 bits on 32 archtecture. > So, remaining bits is only 5 bits. In addition, only 3 bits have remained > on 2.6.8.1 stock kernel. > But, my patches make more 8 bits space in page->flags again. > And kernel can use large number of node and types of zone. > These patches are for 2.6.9-rc2-mm2. Looks relatively innocuous. I wonder if cosmetically we may want s/struct zone_tbl/struct zone_table/ I like the path compression in the 2-level radix tree. Thanks. -- wli -- 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: aart@kvack.org