Changeset 6193351 in mainline

Timestamp:

2010-05-02T14:34:25Z (14 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

d3808d3

Parents:

0321109

Message:

Deploy as_hold() and as_release().

Location:

kernel/generic/src

Files:

• mm/as.c (modified) (1 diff)
• proc/task.c (modified) (2 diffs)

kernel/generic/src/mm/as.c

@@ -152 +152 @@
          * reference count never drops to zero.
          */
-        atomic_set(&AS_KERNEL->refcount, 1);
+        as_hold(AS_KERNEL);
 }
 

kernel/generic/src/proc/task.c

@@ -210 +210 @@
         btree_create(&ta->futexes);
         
+        /*
+         * Get a reference to the address space.
+         */
+        as_hold(ta->as);
+
         ipl = interrupts_disable();
-        atomic_inc(&as->refcount);
         spinlock_lock(&tasks_lock);
         ta->taskid = ++task_counter;
@@ -250 +254 @@
          * Drop our reference to the address space.
          */
-        if (atomic_predec(&t->as->refcount) == 0) 
-                as_destroy(t->as);
+        as_release(t->as);
         
         slab_free(task_slab, t);