Prev: irq: Start the transition of irq_chip methods taking a desc
Next: panic: Allow taint flag for warnings to be changed from TAINT_WARN
From: Oleg Nesterov on 21 Mar 2010 15:00
Move taskstats_tgid_free() from __exit_signal() to free_signal_struct().

This way signal->stats never points to nowhere and we can read ->stats
lockless.

Signed-off-by: Oleg Nesterov <oleg(a)redhat.com>
---

kernel/exit.c | 1 -
kernel/fork.c | 1 +
2 files changed, 1 insertion(+), 1 deletion(-)

--- 34-rc1/kernel/exit.c~13_SIGNAL_STATS 2010-03-21 18:34:02.000000000 +0100
+++ 34-rc1/kernel/exit.c 2010-03-21 18:36:44.000000000 +0100
@@ -145,7 +145,6 @@ static void __exit_signal(struct task_st
clear_tsk_thread_flag(tsk,TIF_SIGPENDING);
if (group_dead) {
flush_sigqueue(&sig->shared_pending);
- taskstats_tgid_free(sig);
tty_kref_put(tty);
}
}
--- 34-rc1/kernel/fork.c~13_SIGNAL_STATS 2010-03-21 18:35:01.000000000 +0100
+++ 34-rc1/kernel/fork.c 2010-03-21 18:37:31.000000000 +0100
@@ -160,6 +160,7 @@ EXPORT_SYMBOL(free_task);

static inline void free_signal_struct(struct signal_struct *sig)
{
+ taskstats_tgid_free(sig);
kmem_cache_free(signal_cachep, sig);
}


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo(a)vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
 | 
Pages: 1
Prev: irq: Start the transition of irq_chip methods taking a desc
Next: panic: Allow taint flag for warnings to be changed from TAINT_WARN