From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933426Ab1DNRrS (ORCPT ); Thu, 14 Apr 2011 13:47:18 -0400 Received: from mail.windriver.com ([147.11.1.11]:38493 "EHLO mail.windriver.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933158Ab1DNRrO (ORCPT ); Thu, 14 Apr 2011 13:47:14 -0400 From: Paul Gortmaker To: stable@kernel.org, linux-kernel@vger.kernel.org Cc: stable-review@kernel.org, "Steven J. Magnani" , Greg Ungerer , Andrew Morton , Linus Torvalds , Paul Gortmaker Subject: [34-longterm 093/209] nommu: yield CPU while disposing VM Date: Thu, 14 Apr 2011 13:42:03 -0400 Message-Id: <1302803039-9400-94-git-send-email-paul.gortmaker@windriver.com> X-Mailer: git-send-email 1.7.4.4 In-Reply-To: <1302803039-9400-1-git-send-email-paul.gortmaker@windriver.com> References: <1302803039-9400-1-git-send-email-paul.gortmaker@windriver.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Steven J. Magnani ===================================================================== | This is a commit scheduled for the next v2.6.34 longterm release. | | If you see a problem with using this for longterm, please comment.| ===================================================================== commit 04c3496152394d17e3bc2316f9731ee3e8a026bc upstream. Depending on processor speed, page size, and the amount of memory a process is allowed to amass, cleanup of a large VM may freeze the system for many seconds. This can result in a watchdog timeout. Make sure other tasks receive some service when cleaning up large VMs. Signed-off-by: Steven J. Magnani Cc: Greg Ungerer Reviewed-by: KOSAKI Motohiro Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds Signed-off-by: Paul Gortmaker --- mm/nommu.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/mm/nommu.c b/mm/nommu.c index 28994ee..1fc13c0 100644 --- a/mm/nommu.c +++ b/mm/nommu.c @@ -1669,6 +1669,7 @@ void exit_mmap(struct mm_struct *mm) mm->mmap = vma->vm_next; delete_vma_from_mm(vma); delete_vma(mm, vma); + cond_resched(); } kleave(""); -- 1.7.4.4