From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx137.postini.com [74.125.245.137]) by kanga.kvack.org (Postfix) with SMTP id 8E26C6B0036 for ; Mon, 26 Aug 2013 21:31:21 -0400 (EDT) Received: from /spool/local by e28smtp06.in.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Tue, 27 Aug 2013 06:51:34 +0530 Received: from d28relay04.in.ibm.com (d28relay04.in.ibm.com [9.184.220.61]) by d28dlp01.in.ibm.com (Postfix) with ESMTP id 0CEEBE0054 for ; Tue, 27 Aug 2013 07:01:52 +0530 (IST) Received: from d28av02.in.ibm.com (d28av02.in.ibm.com [9.184.220.64]) by d28relay04.in.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id r7R1VDRQ40173694 for ; Tue, 27 Aug 2013 07:01:13 +0530 Received: from d28av02.in.ibm.com (localhost [127.0.0.1]) by d28av02.in.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id r7R1VFV9022689 for ; Tue, 27 Aug 2013 07:01:16 +0530 From: Wanpeng Li Subject: [PATCH 2/3] mm/hwpoison: change permission of corrupt-pfn/unpoison-pfn to 0200 Date: Tue, 27 Aug 2013 09:30:53 +0800 Message-Id: <1377567054-32442-2-git-send-email-liwanp@linux.vnet.ibm.com> In-Reply-To: <1377567054-32442-1-git-send-email-liwanp@linux.vnet.ibm.com> References: <1377567054-32442-1-git-send-email-liwanp@linux.vnet.ibm.com> Sender: owner-linux-mm@kvack.org List-ID: To: Andrew Morton Cc: Naoya Horiguchi , Andi Kleen , Fengguang Wu , Tony Luck , gong.chen@linux.intel.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Wanpeng Li Hwpoison inject doesn't implement read method for corrupt-pfn/unpoison-pfn attributes: # cat /sys/kernel/debug/hwpoison/corrupt-pfn cat: /sys/kernel/debug/hwpoison/corrupt-pfn: Permission denied # cat /sys/kernel/debug/hwpoison/unpoison-pfn cat: /sys/kernel/debug/hwpoison/unpoison-pfn: Permission denied This patch change the permission of corrupt-pfn/unpoison-pfn to 0200. Reviewed-by: Naoya Horiguchi Signed-off-by: Wanpeng Li --- mm/hwpoison-inject.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/mm/hwpoison-inject.c b/mm/hwpoison-inject.c index 3a61efc..afc2daa 100644 --- a/mm/hwpoison-inject.c +++ b/mm/hwpoison-inject.c @@ -88,12 +88,12 @@ static int pfn_inject_init(void) * hardware status change, hence do not require hardware support. * They are mainly for testing hwpoison in software level. */ - dentry = debugfs_create_file("corrupt-pfn", 0600, hwpoison_dir, + dentry = debugfs_create_file("corrupt-pfn", 0200, hwpoison_dir, NULL, &hwpoison_fops); if (!dentry) goto fail; - dentry = debugfs_create_file("unpoison-pfn", 0600, hwpoison_dir, + dentry = debugfs_create_file("unpoison-pfn", 0200, hwpoison_dir, NULL, &unpoison_fops); if (!dentry) goto fail; -- 1.8.1.2 -- 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