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authorOleg Nesterov <oleg@redhat.com>2009-06-17 16:27:34 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-06-18 13:03:51 -0700
commitd1e98f429aa10132b3010ba3b0be47552a2eb14b (patch)
treebd4458a65ac9ff942a3ba6dfcd70c281e15e067a
parent8053bdd5ce15dcf043d41a4dd6cac4a5567effdc (diff)
ptrace: wait_task_zombie: s/->parent/->real_parent/
Change wait_task_zombie() to use ->real_parent instead of ->parent. We could even use current afaics, but ->real_parent is more clean. We know that the child is not ptrace_reparented() and thus they are equal. But we should avoid using task_struct->parent, we are going to remove it. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Acked-by: Roland McGrath <roland@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--kernel/exit.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/kernel/exit.c b/kernel/exit.c
index 938cceebb9a..826e1dc8168 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -1204,7 +1204,7 @@ static int wait_task_zombie(struct task_struct *p, int options,
* p->signal fields, because they are only touched by
* __exit_signal, which runs with tasklist_lock
* write-locked anyway, and so is excluded here. We do
- * need to protect the access to p->parent->signal fields,
+ * need to protect the access to parent->signal fields,
* as other threads in the parent group can be right
* here reaping other children at the same time.
*
@@ -1213,8 +1213,8 @@ static int wait_task_zombie(struct task_struct *p, int options,
* group including the group leader.
*/
thread_group_cputime(p, &cputime);
- spin_lock_irq(&p->parent->sighand->siglock);
- psig = p->parent->signal;
+ spin_lock_irq(&p->real_parent->sighand->siglock);
+ psig = p->real_parent->signal;
sig = p->signal;
psig->cutime =
cputime_add(psig->cutime,
@@ -1245,7 +1245,7 @@ static int wait_task_zombie(struct task_struct *p, int options,
sig->oublock + sig->coublock;
task_io_accounting_add(&psig->ioac, &p->ioac);
task_io_accounting_add(&psig->ioac, &sig->ioac);
- spin_unlock_irq(&p->parent->sighand->siglock);
+ spin_unlock_irq(&p->real_parent->sighand->siglock);
}
/*