1 files changed, 7 insertions, 0 deletions

diff --git a/include/linux/shm.h b/include/linux/shm.h
index eca6235a46c0..92808b86703b 100644
--- a/include/linux/shm.h
+++ b/include/linux/shm.h
@@ -95,6 +95,9 @@ struct shmid_kernel /* private to the kernel */
         pid_t                   shm_cprid;
         pid_t                   shm_lprid;
         struct user_struct      *mlock_user;
+
+        /* The task created the shm object.  NULL if the task is dead. */
+        struct task_struct      *shm_creator;
 };
 
 /* shm_mode upper byte flags */
@@ -106,6 +109,7 @@ struct shmid_kernel /* private to the kernel */
 #ifdef CONFIG_SYSVIPC
 long do_shmat(int shmid, char __user *shmaddr, int shmflg, unsigned long *addr);
 extern int is_file_shm_hugepages(struct file *file);
+extern void exit_shm(struct task_struct *task);
 #else
 static inline long do_shmat(int shmid, char __user *shmaddr,
                                 int shmflg, unsigned long *addr)
@@ -116,6 +120,9 @@ static inline int is_file_shm_hugepages(struct file *file)
 {
         return 0;
 }
+static inline void exit_shm(struct task_struct *task)
+{
+}
 #endif
 
 #endif /* __KERNEL__ */