From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail138.messagelabs.com (mail138.messagelabs.com [216.82.249.35]) by kanga.kvack.org (Postfix) with SMTP id 83AE96B003D for ; Fri, 1 May 2009 11:24:45 -0400 (EDT) Received: from localhost (smtp.ultrahosting.com [127.0.0.1]) by smtp.ultrahosting.com (Postfix) with ESMTP id C333B82C4A0 for ; Fri, 1 May 2009 11:36:32 -0400 (EDT) Received: from smtp.ultrahosting.com ([74.213.174.254]) by localhost (smtp.ultrahosting.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id T5B3ljSy6SRc for ; Fri, 1 May 2009 11:36:32 -0400 (EDT) Received: from qirst.com (unknown [74.213.171.31]) by smtp.ultrahosting.com (Postfix) with ESMTP id 5074F82C53A for ; Fri, 1 May 2009 11:36:07 -0400 (EDT) Date: Fri, 1 May 2009 11:14:32 -0400 (EDT) From: Christoph Lameter Subject: Re: [PATCH mmotm] mm: alloc_large_system_hash check order In-Reply-To: <20090501150933.GE27831@csn.ul.ie> Message-ID: References: <20090430132544.GB21997@csn.ul.ie> <20090501140015.GA27831@csn.ul.ie> <20090501150933.GE27831@csn.ul.ie> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org To: Mel Gorman Cc: Hugh Dickins , Andrew Morton , Andi Kleen , David Miller , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org List-ID: On Fri, 1 May 2009, Mel Gorman wrote: > But IIRC, the vmemmap code depends on architecture-specific help from > vmemmap_populate() to place the map in the right place and it's not universally > available. It's likely that similar would be needed to support large > hash tables. I think the networking guys would need to be fairly sure > the larger table would make a big difference before tackling the > problem. The same function could be used. Fallback to vmap is always possible. -- 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