add delete_pframe call to s5_free_block (#10)

1 files changed, 23 insertions, 0 deletions

diff --git a/kernel/mm/mobj.c b/kernel/mm/mobj.c
index 02aced7..3a591f2 100644
--- a/kernel/mm/mobj.c
+++ b/kernel/mm/mobj.c
@@ -282,6 +282,29 @@ long mobj_free_pframe(mobj_t *o, pframe_t **pfp)
     return 0;
 }
 
+void mobj_delete_pframe(mobj_t *o, size_t pagenum)
+{
+    pframe_t *pf;
+    list_iterate(&o->mo_pframes, p, pframe_t, pf_link)
+    {
+        if (p->pf_pagenum == pagenum)
+            pf = p;
+    }
+
+    if (pf)
+    {
+        kmutex_lock(&pf->pf_mutex);
+        list_remove(&pf->pf_link);
+        
+        pf->pf_dirty = 0;
+        if (pf->pf_addr)
+        {
+            page_free(pf->pf_addr);
+            pf->pf_addr = NULL;
+        }
+        pframe_free(&pf);
+    }
+}
 /*
  * Simply flush the memory object
  */