fix bash bug

Signed-off-by: Andy-Python-Programmer <[email protected]>

Author: Andy-Python-Programmer

src/aero_kernel/src/mem/paging/mapper.rs

@@ -569,14 +569,6 @@ impl<'a, P: PageTableFrameMapping> Mapper<Size2MiB> for MappedPageTable<'a, P> {
         p2_entry.unref_vm_frame();
         p2_entry.set_unused();
 
-        let p3_entry = &mut p3[page.p3_index()];
-        p3_entry.dec_entry_count();
-
-        if p3_entry.get_entry_count() == 0 {
-            p3_entry.unref_vm_frame();
-            p3_entry.set_unused();
-        }
-
         Ok((frame, MapperFlush::new(page)))
     }
 
@@ -686,14 +678,6 @@ impl<'a, P: PageTableFrameMapping> Mapper<Size4KiB> for MappedPageTable<'a, P> {
         p1_entry.unref_vm_frame();
         p1_entry.set_unused();
 
-        let p2_entry = &mut p2[page.p2_index()];
-        p2_entry.dec_entry_count();
-
-        if p2_entry.get_entry_count() == 0 {
-            p2_entry.unref_vm_frame();
-            p2_entry.set_unused();
-        }
-
         Ok((frame, MapperFlush::new(page)))
     }
 

src/aero_kernel/src/mem/paging/page_table.rs

@@ -126,14 +126,6 @@ impl PageTableEntry {
         self.set_entry_count(entry_count + 1);
     }
 
-    /// Decrements the page table entry counter by one.
-    pub fn dec_entry_count(&mut self) {
-        let entry_count = self.get_entry_count();
-        assert!(entry_count != 0);
-
-        self.set_entry_count(entry_count - 1);
-    }
-
     /// Returns the physical frame mapped by this entry.
     ///
     /// Returns the following errors: