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| author | Oleg Nesterov <oleg@redhat.com> | 2009-06-18 01:27:34 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-06-18 22:03:51 +0200 |
| commit | d1e98f429aa10132b3010ba3b0be47552a2eb14b (patch) | |
| tree | bd4458a65ac9ff942a3ba6dfcd70c281e15e067a /kernel/exit.c | |
| parent | ptrace_get_task_struct: s/tasklist/rcu/, make it static (diff) | |
| download | linux-d1e98f429aa10132b3010ba3b0be47552a2eb14b.tar.xz linux-d1e98f429aa10132b3010ba3b0be47552a2eb14b.zip | |
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>
Diffstat (limited to '')
| -rw-r--r-- | kernel/exit.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/kernel/exit.c b/kernel/exit.c index 938cceebb9ad..826e1dc8168b 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); } /* |