diff options
| -rw-r--r-- | kernel/proc.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/kernel/proc.c b/kernel/proc.c index 2266ca6..cfb3262 100644 --- a/kernel/proc.c +++ b/kernel/proc.c @@ -292,6 +292,7 @@ fork(void) // are locked. void reparent(struct proc *p, struct proc *parent) { struct proc *pp; + int init_is_my_parent = (p->parent == initproc); for(pp = ptable.proc; pp < &ptable.proc[NPROC]; pp++){ if (pp != p && pp != parent) { @@ -299,9 +300,11 @@ void reparent(struct proc *p, struct proc *parent) { if(pp->parent == p){ pp->parent = initproc; if(pp->state == ZOMBIE) { - acquire(&initproc->lock); + if(!init_is_my_parent) + acquire(&initproc->lock); wakeup1(initproc); - release(&initproc->lock); + if(!init_is_my_parent) + release(&initproc->lock); } } release(&pp->lock); |