1 files changed, 3 insertions, 2 deletions
diff --git a/src/kernel/mem.h b/src/kernel/mem.h
index 5c0d387..4a35978 100644
--- a/src/kernel/mem.h
+++ b/src/kernel/mem.h
@@ -32,14 +32,15 @@ struct mmap_entry {
   uint32_t base;
   uint32_t length;
   uint16_t whose;
-  struct mmap_entry *next;
+  struct mmap_entry *after;
+  struct mmap_entry *before;
 };
 
 #define MMAP_SIZE 65536
 struct mmap_entry *mmap_start;
 struct mmap_entry mmap_bss[MMAP_SIZE];
 uint32_t mmap_bitmap[MMAP_SIZE / 32];
-#define unmark_entry(entry) mmap_bitmap[((entry) - mmap_bss) >> 5] ^= 1 << (((entry) - mmap_bss) & 0x0000001f);
+#define unmark_entry(entry) (mmap_bitmap[((entry) - mmap_bss) >> 5] ^= 1 << (((entry) - mmap_bss) & 0x0000001f))
 void *allocate_block(uint32_t size, uint16_t proc_n);
 void deallocate_block(void *start);