diff options
Diffstat (limited to 'kernel/fork.c')
| -rw-r--r-- | kernel/fork.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/kernel/fork.c b/kernel/fork.c index 017fb23d598..ab5211b9e62 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -787,9 +787,6 @@ void mm_release(struct task_struct *tsk, struct mm_struct *mm) /* Get rid of any cached register state */ deactivate_mm(tsk, mm); - if (tsk->vfork_done) - complete_vfork_done(tsk); - /* * If we're exiting normally, clear a user-space tid field if * requested. We leave this alone when dying by signal, to leave @@ -810,6 +807,13 @@ void mm_release(struct task_struct *tsk, struct mm_struct *mm) } tsk->clear_child_tid = NULL; } + + /* + * All done, finally we can wake up parent and return this mm to him. + * Also kthread_stop() uses this completion for synchronization. + */ + if (tsk->vfork_done) + complete_vfork_done(tsk); } /* @@ -976,9 +980,8 @@ static int copy_io(unsigned long clone_flags, struct task_struct *tsk) * Share io context with parent, if CLONE_IO is set */ if (clone_flags & CLONE_IO) { - tsk->io_context = ioc_task_link(ioc); - if (unlikely(!tsk->io_context)) - return -ENOMEM; + ioc_task_link(ioc); + tsk->io_context = ioc; } else if (ioprio_valid(ioc->ioprio)) { new_ioc = get_task_io_context(tsk, GFP_KERNEL, NUMA_NO_NODE); if (unlikely(!new_ioc)) @@ -1412,6 +1415,7 @@ static struct task_struct *copy_process(unsigned long clone_flags, */ p->group_leader = p; INIT_LIST_HEAD(&p->thread_group); + INIT_HLIST_HEAD(&p->task_works); /* Now that the task is set up, run cgroup callbacks if * necessary. We need to run them before the task is visible |