From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Wed, 21 Mar 2007 16:32:27 -0700 From: William Lee Irwin III Subject: Re: [PATCH 1/7] Introduce the pagetable_operations and associated helper macros. Message-ID: <20070321233227.GK2986@holomorphy.com> References: <20070319200502.17168.17175.stgit@localhost.localdomain> <20070319200513.17168.52238.stgit@localhost.localdomain> <4600B216.3010505@yahoo.com.au> <1174490261.21684.13.camel@localhost.localdomain> <4601B96F.2080707@yahoo.com.au> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4601B96F.2080707@yahoo.com.au> Sender: owner-linux-mm@kvack.org Return-Path: To: Nick Piggin Cc: Adam Litke , Andrew Morton , Arjan van de Ven , Christoph Hellwig , Ken Chen , linux-mm@kvack.org, linux-kernel@vger.kernel.org List-ID: Adam Litke wrote: >> We didn't want to bloat the size of the vm_ops struct for all of its >> users. On Thu, Mar 22, 2007 at 10:02:07AM +1100, Nick Piggin wrote: > But vmas are surely far more numerous than vm_ops, aren't they? It should be clarified that the pointer to the operations structure in once-per-mmap() vmas is a bigger overhead than once-per-driver function pointers in the vm_ops structure. -- 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: email@kvack.org