diff options
Diffstat (limited to 'sys/include')
| -rw-r--r-- | sys/include/vm/obj.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/sys/include/vm/obj.h b/sys/include/vm/obj.h index 6129889..c1c2f17 100644 --- a/sys/include/vm/obj.h +++ b/sys/include/vm/obj.h @@ -42,9 +42,17 @@ struct vm_object { struct vm_pagerops *pgops; /* Pager operations */ uint8_t is_anon : 1; /* Is an anonymous mapping */ + int ref; /* Ref count */ struct vnode *vnode; /* Only used if `is_anon` is 0 */ }; +#define vm_object_ref(OBJPTR) (++(OBJPTR)->ref) +#define vm_object_unref(OBJPTR) do { \ + if ((OBJPTR)->ref > 1) { \ + --(OBJPTR)->ref; \ + } \ + } while (0); + int vm_obj_init(struct vm_object **res, struct vnode *vnode); int vm_obj_destroy(struct vm_object *obj); |