kernel: vm: Add initial demand paging support

Signed-off-by: Ian Moffett <ian@osmora.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/sys/include/vm/obj.h b/sys/include/vm/obj.h
index c1c2f17..ef07a1e 100644
--- a/sys/include/vm/obj.h
+++ b/sys/include/vm/obj.h
@@ -42,6 +42,7 @@ struct vm_object {
     struct vm_pagerops *pgops;      /* Pager operations */
 
     uint8_t is_anon : 1;            /* Is an anonymous mapping */
+    uint8_t demand  : 1;            /* Only mapped upon access */
     int ref;                        /* Ref count */
     struct vnode *vnode;            /* Only used if `is_anon` is 0 */
 };