commit 55a101f8f71a3d3dbda7b5c77083ffe47552f831
author Oleg Nesterov <oleg@tv-sign.ru> Fri Sep 29 02:01:10 2006 -0700
committer Linus Torvalds <torvalds@g5.osdl.org> Fri Sep 29 09:18:20 2006 -0700
tree 52706df201efd82d09bed39562502b4caa357af4
parent 29b884921634e1e01cbd276e1c9b8fc07a7e4a90

[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>

kernel/exit.c

diff --git a/kernel/exit.c b/kernel/exit.c
index 3d759c9..9dd5f13 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -953,10 +953,8 @@
 	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 @@
 {
 	if (comp)
 		complete(comp);
-	
+
 	do_exit(code);
 }