android/lowmemorykiller: Ignore tasks with freed mm
A killed task can stay in the task list long after its
memory has been returned to the system, therefore
ignore any tasks whose mm struct has been freed.
Change-Id: I76394b203b4ab2312437c839976f0ecb7b6dde4e
CRs-fixed: 450383
Signed-off-by: Liam Mark <lmark@codeaurora.org>
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 0a1428e..67889bf 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -2304,7 +2304,7 @@
}
/* mmput gets rid of the mappings and all user-space */
-extern void mmput(struct mm_struct *);
+extern int mmput(struct mm_struct *);
/* Grab a reference to a task's mm, if it is not already going away */
extern struct mm_struct *get_task_mm(struct task_struct *task);
/*