[PATCH] kill PF_DEAD flag

After the previous change (->flags & PF_DEAD) <=> (->state == EXIT_DEAD), we
don't need PF_DEAD any longer.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 2 insertions, 4 deletions

diff --git a/kernel/exit.c b/kernel/exit.c
index 3d759c98fb1..9dd5f1336da 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -953,10 +953,8 @@ fastcall NORET_TYPE void do_exit(long code)
         if (tsk->splice_pipe)
                 __free_pipe_info(tsk->splice_pipe);
 
-        /* PF_DEAD causes final put_task_struct after we schedule. */
         preempt_disable();
-        BUG_ON(tsk->flags & PF_DEAD);
-        tsk->flags |= PF_DEAD;
+        /* causes final put_task_struct in finish_task_switch(). */
         tsk->state = EXIT_DEAD;
 
         schedule();
@@ -972,7 +970,7 @@ NORET_TYPE void complete_and_exit(struct completion *comp, long code)
 {
         if (comp)
                 complete(comp);
-        
+
         do_exit(code);
 }