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authorWanpeng Li <liwanp@linux.vnet.ibm.com>2013-09-11 14:23:00 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-09-11 15:58:11 -0700
commit2d1e8b3f1acc36101dbe6c5fc14e88e3f6af0b1c (patch)
tree5c930f08e146de5969f34cb98e605d8394366f70
parent29b4eedee67b449534214058e1bcb36307a7f1dc (diff)
mm/hwpoison-inject.c: change permission of corrupt-pfn/unpoison-pfn to 0200
Hwpoison injection 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 changes the permission of corrupt-pfn/unpoison-pfn to 0200. Signed-off-by: Wanpeng Li <liwanp@linux.vnet.ibm.com> Reviewed-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Cc: Andi Kleen <andi@firstfloor.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--mm/hwpoison-inject.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/mm/hwpoison-inject.c b/mm/hwpoison-inject.c
index 3a61efc518d..afc2daa91c6 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;