fix leakage on mid-level page table when freeing vms

[lunaix-os.git] / lunaix-os / scripts / gdb / lunadbg / structs / page.py

diff --git a/lunaix-os/scripts/gdb/lunadbg/structs/page.py b/lunaix-os/scripts/gdb/lunadbg/structs/page.py
index 6dc5bf98ff46236cd92f85ceae79895624a3a275..cbb17f5079f8d2143378a9072549df8d67e3ba3c 100644 (file)
--- a/lunaix-os/scripts/gdb/lunadbg/structs/page.py
+++ b/lunaix-os/scripts/gdb/lunadbg/structs/page.py
@@ -9,6 +9,7 @@ class PageStruct(KernelStruct):
         self.flags = self._kstruct["flags"]
         self.order = self._kstruct["order"]
         self.pool = self._kstruct["pool"]
+        self.companion = self._kstruct["companion"]
 
     def uninitialized(self):
         return not (self.flags & 0b10)
@@ -20,8 +21,12 @@ class PageStruct(KernelStruct):
     
     def busy(self):
         return (not self.uninitialized()
+                and self.type != 0b1000
                 and self.ref > 0)
 
+    def lead_page(self):
+        return self.companion == 0 and not self.uninitialized()
+
     @staticmethod
     def get_type() -> Type:
         return lookup_type("struct ppage").pointer()