tree 220f88576b5c83369892ce13cb180bab6cccba7a
parent 06b8e878a9bc9301201cffe186eba99c4185f20a
author Oleg Nesterov <oleg@tv-sign.ru> 1202290573 -0800
committer Linus Torvalds <torvalds@woody.linux-foundation.org> 1202323260 -0800

use __set_task_state() for TRACED/STOPPED tasks

1. It is much easier to grep for ->state change if __set_task_state() is used
   instead of the direct assignment.

2. ptrace_stop() and handle_group_stop() use set_task_state() which adds the
   unneeded mb() (btw even if we use mb() it is still possible that do_wait()
   sees the new ->state but not ->exit_code, but this is ok).

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Acked-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>