kernel: physmem: Update page counts on alloc/free

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

1 files changed, 4 insertions, 0 deletions

diff --git a/sys/vm/vm_physmem.c b/sys/vm/vm_physmem.c
index b6e7347..f8caf9a 100644
--- a/sys/vm/vm_physmem.c
+++ b/sys/vm/vm_physmem.c
@@ -194,6 +194,8 @@ vm_alloc_frame(size_t count)
         ret = __vm_alloc_frame(count);
     }
 
+    pages_used += count;
+    pages_free -= count;
     spinlock_release(&lock);
     return ret;
 }
@@ -209,6 +211,8 @@ vm_free_frame(uintptr_t base, size_t count)
     for (uintptr_t p = base; p < stop_at; p += DEFAULT_PAGESIZE) {
         clrbit(bitmap, p / DEFAULT_PAGESIZE);
     }
+    pages_used -= count;
+    pages_free += count;
     spinlock_release(&lock);
 }