ptrace children revamp

ptrace no longer fiddles with the children/sibling links, and the
old ptrace_children list is gone.  Now ptrace, whether of one's own
children or another's via PTRACE_ATTACH, just uses the new ptraced
list instead.

There should be no user-visible difference that matters.  The only
change is the order in which do_wait() sees multiple stopped
children and stopped ptrace attachees.  Since wait_task_stopped()
was changed earlier so it no longer reorders the children list, we
already know this won't cause any new problems.

Signed-off-by: Roland McGrath <roland@redhat.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/include/linux/init_task.h b/include/linux/init_task.h
index 9927a88674a..93c45acf249 100644
--- a/include/linux/init_task.h
+++ b/include/linux/init_task.h
@@ -140,8 +140,8 @@ extern struct group_info init_groups;
                 .nr_cpus_allowed = NR_CPUS,                             \
         },                                                              \
         .tasks          = LIST_HEAD_INIT(tsk.tasks),                    \
-        .ptrace_children= LIST_HEAD_INIT(tsk.ptrace_children),          \
-        .ptrace_list    = LIST_HEAD_INIT(tsk.ptrace_list),              \
+        .ptraced        = LIST_HEAD_INIT(tsk.ptraced),                  \
+        .ptrace_entry   = LIST_HEAD_INIT(tsk.ptrace_entry),             \
         .real_parent    = &tsk,                                         \
         .parent         = &tsk,                                         \
         .children       = LIST_HEAD_INIT(tsk.children),                 \