Commit aacc9094 authored by Oleg Nesterov's avatar Oleg Nesterov Committed by Linus Torvalds
Browse files

[PATCH] do_group_exit: don't take tasklist_lock 



do_group_exit() takes tasklist_lock for zap_other_threads(), this is unneeded
now.

Signed-off-by: default avatarOleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent a122b341

kernel/exit.c

+0 −2
Original line number Diff line number Diff line
@@ -985,7 +985,6 @@ do_group_exit(int exit_code) 
	else if (!thread_group_empty(current)) {

		struct signal_struct *const sig = current->signal;

		struct sighand_struct *const sighand = current->sighand;

		read_lock(&tasklist_lock);

		spin_lock_irq(&sighand->siglock);

		if (sig->flags & SIGNAL_GROUP_EXIT)

			/* Another thread got here before we took the lock.  */
@@ -995,7 +994,6 @@ do_group_exit(int exit_code) 
			zap_other_threads(current);

		}

		spin_unlock_irq(&sighand->siglock);

		read_unlock(&tasklist_lock);

	}



	do_exit(exit_code);