Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761144AbZCPRz7 (ORCPT ); Mon, 16 Mar 2009 13:55:59 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1757972AbZCPRvf (ORCPT ); Mon, 16 Mar 2009 13:51:35 -0400 Received: from gir.skynet.ie ([193.1.99.77]:51205 "EHLO gir.skynet.ie" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756063AbZCPRvc (ORCPT ); Mon, 16 Mar 2009 13:51:32 -0400 From: Mel Gorman To: Mel Gorman , Linux Memory Management List Cc: Pekka Enberg , Rik van Riel , KOSAKI Motohiro , Christoph Lameter , Johannes Weiner , Nick Piggin , Linux Kernel Mailing List , Lin Ming , Zhang Yanmin , Peter Zijlstra Subject: [PATCH 13/27] Inline __rmqueue_smallest() Date: Mon, 16 Mar 2009 17:53:27 +0000 Message-Id: <1237226020-14057-14-git-send-email-mel@csn.ul.ie> X-Mailer: git-send-email 1.5.6.5 In-Reply-To: <1237226020-14057-1-git-send-email-mel@csn.ul.ie> References: <1237226020-14057-1-git-send-email-mel@csn.ul.ie> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2186 Lines: 72 Inline __rmqueue_smallest by altering flow very slightly so that there is only one call site. This allows the function to be inlined without additional text bloat. Signed-off-by: Mel Gorman --- mm/page_alloc.c | 23 ++++++++++++++++++----- 1 files changed, 18 insertions(+), 5 deletions(-) diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 1e8b4b6..a3ca80d 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -664,7 +664,8 @@ static int prep_new_page(struct page *page, int order, gfp_t gfp_flags) * Go through the free lists for the given migratetype and remove * the smallest available page from the freelists */ -static struct page *__rmqueue_smallest(struct zone *zone, unsigned int order, +static inline +struct page *__rmqueue_smallest(struct zone *zone, unsigned int order, int migratetype) { unsigned int current_order; @@ -834,24 +835,36 @@ static struct page *__rmqueue_fallback(struct zone *zone, int order, } } - /* Use MIGRATE_RESERVE rather than fail an allocation */ - return __rmqueue_smallest(zone, order, MIGRATE_RESERVE); + return NULL; } /* * Do the hard work of removing an element from the buddy allocator. * Call me with the zone->lock already held. */ -static struct page *__rmqueue(struct zone *zone, unsigned int order, +static inline +struct page *__rmqueue(struct zone *zone, unsigned int order, int migratetype) { struct page *page; +retry_reserve: page = __rmqueue_smallest(zone, order, migratetype); - if (unlikely(!page)) + if (unlikely(!page) && migratetype != MIGRATE_RESERVE) { page = __rmqueue_fallback(zone, order, migratetype); + /* + * Use MIGRATE_RESERVE rather than fail an allocation. goto + * is used because __rmqueue_smallest is an inline function + * and we want just one call site + */ + if (!page) { + migratetype = MIGRATE_RESERVE; + goto retry_reserve; + } + } + return page; } -- 1.5.6.5 -- 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/