Fix: mman behavior

kernel/include/mman.h

@@ -19,7 +19,11 @@ typedef enum :uint8_t {
 
 typedef struct {
   page_state_t state;
-  uint64_t maxsz;
+
+  // when state == PAGE_ALLOCATED or PAGE_RESERVED, size = 0
+  // when state == PAGE_FREE, size = r - l
+  // when state == PAGE_DIVIDED, size = LCH->size | RCH->size
+  uint64_t size;
 } page_header_t;
 
 void mman_init();

kernel/include/timer.h

@@ -20,7 +20,7 @@ typedef struct timer {
   task_t data;
 } timer_t;
 
-void add_task(task_t task);
+void add_timer_task(task_t task);
 
 void timer_irq_handler(void);
 

kernel/include/utils.h

@@ -6,6 +6,8 @@
 uint32_t msb32(uint32_t);
 uint64_t msb64(uint64_t);
 
+uint64_t lsb64(uint64_t);
+
 uint32_t hton32(const uint32_t);
 uint32_t ntoh32(const uint32_t);