From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 23 Aug 2001 15:33:27 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 23 Aug 2001 15:33:19 -0400 Received: from mailc.telia.com ([194.22.190.4]:21714 "EHLO mailc.telia.com") by vger.kernel.org with ESMTP id ; Thu, 23 Aug 2001 15:33:14 -0400 Message-Id: <200108231933.f7NJX8j21551@mailc.telia.com> Content-Type: text/plain; charset="iso-8859-1" From: Roger Larsson To: Rik van Riel , torvalds@transmeta.com (Linus Torvalds), alan.cox@redhat.com Subject: Upd: [PATCH NG] alloc_pages_limit & pages_min Date: Thu, 23 Aug 2001 21:28:44 +0200 X-Mailer: KMail [version 1.3] Cc: , Linux Kernel Mailing List In-Reply-To: In-Reply-To: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Riel convinced be to back off a part of the patch. Here comes an updated one. -- Roger Larsson Skellefteċ Sweden ******************************************* Patch prepared by: roger.larsson@norran.net Name of file: linux-2.4.8-pre3-pages_min-R3 --- linux/mm/page_alloc.c.orig Thu Aug 23 19:58:55 2001 +++ linux/mm/page_alloc.c Thu Aug 23 21:19:20 2001 @@ -253,11 +253,26 @@ if (z->free_pages + z->inactive_clean_pages >= water_mark) { struct page *page = NULL; - /* If possible, reclaim a page directly. */ - if (direct_reclaim) + + /* + * Reclaim a page from the inactive_clean list. + * If needed, refill the free list up to the + * low water mark. + */ + if (direct_reclaim) { page = reclaim_page(z); - /* If that fails, fall back to rmqueue. */ - if (!page) + + while (page && z->free_pages < z->pages_min) { + __free_page(page); + page = reclaim_page(z); + } + + /* let kreclaimd handle up to pages_high */ + } + /* If that fails, fall back to rmqueue, but never let + * free_pages go below pages_min... + */ + if (!page && z->free_pages >= z->pages_min) page = rmqueue(z, order); if (page) return page;