From mboxrd@z Thu Jan 1 00:00:00 1970 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756729AbaAAA3o (ORCPT ); Tue, 31 Dec 2013 19:29:44 -0500 Received: from e39.co.us.ibm.com ([32.97.110.160]:35642 "EHLO e39.co.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756702AbaAAA3n (ORCPT ); Tue, 31 Dec 2013 19:29:43 -0500 Date: Wed, 1 Jan 2014 08:29:35 +0800 From: Han Pingtian To: linux-kernel@vger.kernel.org Cc: Andrea Arcangeli , Mel Gorman , Andrew Morton , linux-mm@kvack.org Subject: [RFC] mm: show message when updating min_free_kbytes in thp Message-ID: <20140101002935.GA15683@localhost.localdomain> Mail-Followup-To: linux-kernel@vger.kernel.org, Andrea Arcangeli , Mel Gorman , Andrew Morton , linux-mm@kvack.org MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.21 (2010-09-15) X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 14010100-9332-0000-0000-000002A23FF9 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org min_free_kbytes may be updated during thp's initialization. Sometimes, this will change the value being set by user. Showing message will clarify this confusion. Signed-off-by: Han Pingtian --- mm/huge_memory.c | 5 ++++- 1 files changed, 4 insertions(+), 1 deletions(-) diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 7de1bf8..46011c6 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -130,8 +130,11 @@ static int set_recommended_min_free_kbytes(void) (unsigned long) nr_free_buffer_pages() / 20); recommended_min <<= (PAGE_SHIFT-10); - if (recommended_min > min_free_kbytes) + if (recommended_min > min_free_kbytes) { min_free_kbytes = recommended_min; + pr_info("min_free_kbytes is updated to %d by enabling transparent hugepage.\n", + min_free_kbytes); + } setup_per_zone_wmarks(); return 0; } -- 1.7.7.6