From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx124.postini.com [74.125.245.124]) by kanga.kvack.org (Postfix) with SMTP id 2E91B6B0005 for ; Thu, 28 Mar 2013 11:43:11 -0400 (EDT) From: Naoya Horiguchi 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: owner-linux-mm@kvack.org List-ID: 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 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 -- 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