From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pa0-f49.google.com (mail-pa0-f49.google.com [209.85.220.49]) by kanga.kvack.org (Postfix) with ESMTP id 1DAA06B0254 for ; Mon, 28 Sep 2015 21:06:53 -0400 (EDT) Received: by pacfv12 with SMTP id fv12so193182173pac.2 for ; Mon, 28 Sep 2015 18:06:52 -0700 (PDT) Received: from e28smtp05.in.ibm.com (e28smtp05.in.ibm.com. [122.248.162.5]) by mx.google.com with ESMTPS id xt7si32863323pab.187.2015.09.28.18.06.51 for (version=TLSv1 cipher=AES128-SHA bits=128/128); Mon, 28 Sep 2015 18:06:52 -0700 (PDT) Received: from /spool/local by e28smtp05.in.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Tue, 29 Sep 2015 06:36:48 +0530 Received: from d28relay01.in.ibm.com (d28relay01.in.ibm.com [9.184.220.58]) by d28dlp01.in.ibm.com (Postfix) with ESMTP id BE1E1E0058 for ; Tue, 29 Sep 2015 06:36:30 +0530 (IST) Received: from d28av05.in.ibm.com (d28av05.in.ibm.com [9.184.220.67]) by d28relay01.in.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id t8T16kB536044902 for ; Tue, 29 Sep 2015 06:36:46 +0530 Received: from d28av05.in.ibm.com (localhost [127.0.0.1]) by d28av05.in.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id t8T16j81027050 for ; Tue, 29 Sep 2015 06:36:46 +0530 From: Wei Yang Subject: [PATCH 2/2] mm/slub: use get_order() instead of fls() Date: Tue, 29 Sep 2015 09:06:27 +0800 Message-Id: <1443488787-2232-2-git-send-email-weiyang@linux.vnet.ibm.com> In-Reply-To: <1443488787-2232-1-git-send-email-weiyang@linux.vnet.ibm.com> References: <1443488787-2232-1-git-send-email-weiyang@linux.vnet.ibm.com> Sender: owner-linux-mm@kvack.org List-ID: To: cl@linux.com, penberg@kernel.org, rientjes@google.com Cc: linux-mm@kvack.org, Wei Yang get_order() is more easy to understand. This patch just replaces it. Signed-off-by: Wei Yang --- mm/slub.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/mm/slub.c b/mm/slub.c index a94b9f4..e309ed1 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -2912,8 +2912,7 @@ static inline int slab_order(int size, int min_objects, if (order_objects(min_order, size, reserved) > MAX_OBJS_PER_PAGE) return get_order(size * MAX_OBJS_PER_PAGE) - 1; - for (order = max(min_order, - fls(min_objects * size - 1) - PAGE_SHIFT); + for (order = max(min_order, get_order(min_objects * size)); order <= max_order; order++) { unsigned long slab_size = PAGE_SIZE << order; -- 2.5.0 -- 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