[PATCH] proc: don't use READ_ONCE/WRITE_ONCE for /proc/*/fail-nth

[Alexey Dobriyan]

READ_ONCE and WRITE_ONCE are useless when there is only one read/write
is being made.

Signed-off-by: Alexey Dobriyan <adobri...@gmail.com>
---

 fs/proc/base.c |    5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -1371,7 +1371,7 @@ static ssize_t proc_fail_nth_write(struct file *file, 
const char __user *buf,
        task = get_proc_task(file_inode(file));
        if (!task)
                return -ESRCH;
-       WRITE_ONCE(task->fail_nth, n);
+       task->fail_nth = n;
        put_task_struct(task);
 
        return count;
@@ -1387,8 +1387,7 @@ static ssize_t proc_fail_nth_read(struct file *file, char 
__user *buf,
        task = get_proc_task(file_inode(file));
        if (!task)
                return -ESRCH;
-       len = snprintf(numbuf, sizeof(numbuf), "%u\n",
-                       READ_ONCE(task->fail_nth));
+       len = snprintf(numbuf, sizeof(numbuf), "%u\n", task->fail_nth);
        len = simple_read_from_buffer(buf, count, ppos, numbuf, len);
        put_task_struct(task);