From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756499Ab3C1Pn5 (ORCPT ); Thu, 28 Mar 2013 11:43:57 -0400 Received: from mx1.redhat.com ([209.132.183.28]:10279 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751214Ab3C1Pnz (ORCPT ); Thu, 28 Mar 2013 11:43:55 -0400 From: Naoya Horiguchi To: Andrew Morton Cc: Mel Gorman , Hugh Dickins , Rik van Riel , KOSAKI Motohiro , stable@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Konstantin Khlebnikov Subject: [PATCH 1/2] hugetlbfs: stop setting VM_DONTDUMP in initializing vma(VM_HUGETLB) Date: Thu, 28 Mar 2013 11:42:37 -0400 Message-Id: <1364485358-8745-2-git-send-email-n-horiguchi@ah.jp.nec.com> In-Reply-To: <1364485358-8745-1-git-send-email-n-horiguchi@ah.jp.nec.com> References: <1364485358-8745-1-git-send-email-n-horiguchi@ah.jp.nec.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Currently we fail to include any data on hugepages into coredump, because VM_DONTDUMP is set on hugetlbfs's vma. This behavior was recently introduced by commit 314e51b98 "mm: kill vma flag VM_RESERVED and mm->reserved_vm counter". This looks to me a serious regression, so let's fix it. Signed-off-by: Naoya Horiguchi Cc: Konstantin Khlebnikov --- fs/hugetlbfs/inode.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git v3.9-rc3.orig/fs/hugetlbfs/inode.c v3.9-rc3/fs/hugetlbfs/inode.c index 84e3d85..523464e 100644 --- v3.9-rc3.orig/fs/hugetlbfs/inode.c +++ v3.9-rc3/fs/hugetlbfs/inode.c @@ -110,7 +110,7 @@ static int hugetlbfs_file_mmap(struct file *file, struct vm_area_struct *vma) * way when do_mmap_pgoff unwinds (may be important on powerpc * and ia64). */ - vma->vm_flags |= VM_HUGETLB | VM_DONTEXPAND | VM_DONTDUMP; + vma->vm_flags |= VM_HUGETLB | VM_DONTEXPAND; vma->vm_ops = &hugetlb_vm_ops; if (vma->vm_pgoff & (~huge_page_mask(h) >> PAGE_SHIFT)) -- 1.7.11.7