Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758352Ab0FPLLu (ORCPT ); Wed, 16 Jun 2010 07:11:50 -0400 Received: from earthlight.etchedpixels.co.uk ([81.2.110.250]:45357 "EHLO www.etchedpixels.co.uk" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1754111Ab0FPLLs (ORCPT ); Wed, 16 Jun 2010 07:11:48 -0400 Date: Wed, 16 Jun 2010 12:15:17 +0100 From: Alan Cox To: Richard Yao Cc: linux-kernel@vger.kernel.org Subject: Re: Does the kernel page the CFS's red-black tree nodes? Message-ID: <20100616121517.1e66f06f@lxorguk.ukuu.org.uk> In-Reply-To: References: X-Mailer: Claws Mail 3.7.6 (GTK+ 2.18.9; x86_64-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 515 Lines: 11 The kernel doesn't page its own data structures (there a couple of exceptional cases). That avoids the entire nightmare of trying to have partly paged kernels, the resulting priority inversions and all the other horrors you can get plus the big overheads from it. Alan -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/