Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Sun, 28 Jul 2002 22:58:57 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Sun, 28 Jul 2002 22:58:57 -0400 Received: from pizda.ninka.net ([216.101.162.242]:55778 "EHLO pizda.ninka.net") by vger.kernel.org with ESMTP id ; Sun, 28 Jul 2002 22:58:56 -0400 Date: Sun, 28 Jul 2002 19:50:55 -0700 (PDT) Message-Id: <20020728.195055.105468330.davem@redhat.com> To: akpm@zip.com.au Cc: torvalds@transmeta.com, linux-kernel@vger.kernel.org Subject: Re: [patch 2/13] remove pages from the LRU in __free_pages_ok() From: "David S. Miller" In-Reply-To: <3D448D38.D156C249@zip.com.au> References: <3D439E10.67A839A5@zip.com.au> <3D448D38.D156C249@zip.com.au> X-Mailer: Mew version 2.1 on Emacs 21.1 / Mule 5.0 (SAKAKI) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 800 Lines: 20 From: Andrew Morton Date: Sun, 28 Jul 2002 17:32:56 -0700 Also skb_release_data(), ___pskb_trim() and __pskb_pull_tail(). Can these ever perform the final release against a page which is on the LRU? In interrupt context? These page releases run from either user or softint context. They must never run from HW irqs, in fact there is a BUG() check there against this. Any page that can be found in the page cache can end up here. So whatever that mean for "release against a page which is on the LRU" applies here. - 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/