From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pa0-f50.google.com (mail-pa0-f50.google.com [209.85.220.50]) by kanga.kvack.org (Postfix) with ESMTP id D6BE26B0255 for ; Mon, 13 Jul 2015 06:54:19 -0400 (EDT) Received: by pacan13 with SMTP id an13so14165828pac.1 for ; Mon, 13 Jul 2015 03:54:19 -0700 (PDT) Received: from mga03.intel.com (mga03.intel.com. [134.134.136.65]) by mx.google.com with ESMTP id dn2si27870766pdb.54.2015.07.13.03.54.16 for ; Mon, 13 Jul 2015 03:54:16 -0700 (PDT) From: "Kirill A. Shutemov" Subject: [PATCH 4/5] mm, madvise: use vma_is_anonymous() to check for anon VMA Date: Mon, 13 Jul 2015 13:54:11 +0300 Message-Id: <1436784852-144369-5-git-send-email-kirill.shutemov@linux.intel.com> In-Reply-To: <1436784852-144369-1-git-send-email-kirill.shutemov@linux.intel.com> References: <1436784852-144369-1-git-send-email-kirill.shutemov@linux.intel.com> Sender: owner-linux-mm@kvack.org List-ID: To: Andrew Morton , Oleg Nesterov Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, "Kirill A. Shutemov" , Minchan Kim !vma->vm_file is not reliable to detect anon VMA, because not all drivers bother set it. Let's use vma_is_anonymous() instead. Signed-off-by: Kirill A. Shutemov Cc: Minchan Kim --- mm/madvise.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/madvise.c b/mm/madvise.c index 70ce0d425d72..a4fae076f61d 100644 --- a/mm/madvise.c +++ b/mm/madvise.c @@ -393,7 +393,7 @@ static int madvise_free_single_vma(struct vm_area_struct *vma, return -EINVAL; /* MADV_FREE works for only anon vma at the moment */ - if (vma->vm_file) + if (!vma_is_anonymous(vma)) return -EINVAL; start = max(vma->vm_start, start_addr); -- 2.1.4 -- 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