diff options
Diffstat (limited to 'kernel/fork.c')
| -rw-r--r-- | kernel/fork.c | 35 |
1 files changed, 18 insertions, 17 deletions
diff --git a/kernel/fork.c b/kernel/fork.c index 74c67629ee6..0c32e28cdc5 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -1181,25 +1181,26 @@ static task_t *copy_process(unsigned long clone_flags, */ p->ioprio = current->ioprio; - add_parent(p); - if (unlikely(p->ptrace & PT_PTRACED)) - __ptrace_link(p, current->parent); - - if (thread_group_leader(p)) { - p->signal->tty = current->signal->tty; - p->signal->pgrp = process_group(current); - p->signal->session = current->signal->session; - attach_pid(p, PIDTYPE_PGID, process_group(p)); - attach_pid(p, PIDTYPE_SID, p->signal->session); - - list_add_tail(&p->tasks, &init_task.tasks); - if (p->pid) + if (likely(p->pid)) { + add_parent(p); + if (unlikely(p->ptrace & PT_PTRACED)) + __ptrace_link(p, current->parent); + + if (thread_group_leader(p)) { + p->signal->tty = current->signal->tty; + p->signal->pgrp = process_group(current); + p->signal->session = current->signal->session; + attach_pid(p, PIDTYPE_PGID, process_group(p)); + attach_pid(p, PIDTYPE_SID, p->signal->session); + + list_add_tail(&p->tasks, &init_task.tasks); __get_cpu_var(process_counts)++; + } + attach_pid(p, PIDTYPE_TGID, p->tgid); + attach_pid(p, PIDTYPE_PID, p->pid); + nr_threads++; } - attach_pid(p, PIDTYPE_TGID, p->tgid); - attach_pid(p, PIDTYPE_PID, p->pid); - nr_threads++; total_forks++; spin_unlock(¤t->sighand->siglock); write_unlock_irq(&tasklist_lock); @@ -1263,7 +1264,7 @@ task_t * __devinit fork_idle(int cpu) if (!task) return ERR_PTR(-ENOMEM); init_idle(task, cpu); - unhash_process(task); + return task; } |