From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751571AbaFEETp (ORCPT ); Thu, 5 Jun 2014 00:19:45 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:43557 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750820AbaFEETk (ORCPT ); Thu, 5 Jun 2014 00:19:40 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Masayoshi Mizuma , Naoya Horiguchi , Joonsoo Kim , Michal Hocko , Aneesh Kumar , KOSAKI Motohiro , Andrew Morton , Linus Torvalds Subject: [PATCH 3.4 002/214] mm/hugetlb.c: add cond_resched_lock() in return_unused_surplus_pages() Date: Wed, 4 Jun 2014 21:16:05 -0700 Message-Id: <20140605041640.020070087@linuxfoundation.org> X-Mailer: git-send-email 2.0.0 In-Reply-To: <20140605041639.638675216@linuxfoundation.org> References: <20140605041639.638675216@linuxfoundation.org> User-Agent: quilt/0.60-1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: "Mizuma, Masayoshi" commit 7848a4bf51b34f41fcc9bd77e837126d99ae84e3 upstream. soft lockup in freeing gigantic hugepage fixed in commit 55f67141a892 "mm: hugetlb: fix softlockup when a large number of hugepages are freed." can happen in return_unused_surplus_pages(), so let's fix it. Signed-off-by: Masayoshi Mizuma Signed-off-by: Naoya Horiguchi Cc: Joonsoo Kim Cc: Michal Hocko Cc: Aneesh Kumar Cc: KOSAKI Motohiro Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds Signed-off-by: Greg Kroah-Hartman --- mm/hugetlb.c | 1 + 1 file changed, 1 insertion(+) --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -1082,6 +1082,7 @@ static void return_unused_surplus_pages( while (nr_pages--) { if (!free_pool_huge_page(h, &node_states[N_HIGH_MEMORY], 1)) break; + cond_resched_lock(&hugetlb_lock); } }