]> err.no Git - linux-2.6/commit
[PATCH] futex_find_get_task(): remove an obscure EXIT_ZOMBIE check
authorOleg Nesterov <oleg@tv-sign.ru>
Sun, 27 Aug 2006 08:23:40 +0000 (01:23 -0700)
committerLinus Torvalds <torvalds@g5.osdl.org>
Sun, 27 Aug 2006 18:01:30 +0000 (11:01 -0700)
commitd015baebba44613ef59ddffeae2114fa4ede7104
tree24fb1e84890da3dbbd391b79f91426e3de274480
parent533475d3d48eb839be2b57f6b020150abae91063
[PATCH] futex_find_get_task(): remove an obscure EXIT_ZOMBIE check

futex_find_get_task:

if (p->state == EXIT_ZOMBIE || p->exit_state == EXIT_ZOMBIE)
return NULL;

I can't understand this.  First, p->state can't be EXIT_ZOMBIE.  The
->exit_state check looks strange too.  Sub-threads or tasks whose ->parent
ignores SIGCHLD go directly to EXIT_DEAD state (I am ignoring a ptrace
case).  Why EXIT_DEAD tasks should be ok?  Yes, EXIT_ZOMBIE is more
important (a task may stay zombie for a long time), but this doesn't mean
we should explicitely ignore other EXIT_XXX states.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Acked-by: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
kernel/futex.c