From mboxrd@z Thu Jan 1 00:00:00 1970 From: Johannes Weiner Subject: Re: [rfc][patch 0/3] bootmem2: a memory block-oriented boot time allocator References: <20080505095938.326928514@symbol.fehenstaub.lan> <481F58DD.9000600@firstfloor.org> Date: Tue, 06 May 2008 10:57:12 +0200 In-Reply-To: <481F58DD.9000600@firstfloor.org> (Andi Kleen's message of "Mon, 05 May 2008 20:58:37 +0200") Message-ID: <87r6cflsif.fsf@saeurebad.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: owner-linux-mm@kvack.org Return-Path: To: Andi Kleen Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, Ingo Molnar , Yinghai Lu , Andrew Morton , Linus Torvalds , Yasunori Goto List-ID: Hi, Andi Kleen writes: >> (because a PFN is not unique anymore) > > That doesn't make sense. If a PFN is not uniquely mapping to a single > memory page anymore the VM and lots of other code in the kernel will > just not work. And each memory page can be only in a single node. I meant it is not unique to the bootmem allocator because two bitmaps might partially represent the same page range. Hannes -- 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