1 files changed, 6 insertions, 43 deletions

diff --git a/include/linux/sem.h b/include/linux/sem.h
index 1feb2de2ee57..10d6b226afc5 100644
--- a/include/linux/sem.h
+++ b/include/linux/sem.h
@@ -83,13 +83,6 @@ struct  seminfo {
 
 struct task_struct;
 
-/* One semaphore structure for each semaphore in the system. */
-struct sem {
-        int     semval;         /* current value */
-        int     sempid;         /* pid of last operation */
-        struct list_head sem_pending; /* pending single-sop operations */
-};
-
 /* One sem_array data structure for each set of semaphores in the system. */
 struct sem_array {
         struct kern_ipc_perm    ____cacheline_aligned_in_smp
@@ -103,51 +96,21 @@ struct sem_array {
         int                     complex_count;  /* pending complex operations */
 };
 
-/* One queue for each sleeping process in the system. */
-struct sem_queue {
-        struct list_head        simple_list; /* queue of pending operations */
-        struct list_head        list;    /* queue of pending operations */
-        struct task_struct      *sleeper; /* this process */
-        struct sem_undo         *undo;   /* undo structure */
-        int                     pid;     /* process id of requesting process */
-        int                     status;  /* completion status of operation */
-        struct sembuf           *sops;   /* array of pending operations */
-        int                     nsops;   /* number of operations */
-        int                     alter;   /* does the operation alter the array? */
-};
-
-/* Each task has a list of undo requests. They are executed automatically
- * when the process exits.
- */
-struct sem_undo {
-        struct list_head        list_proc;      /* per-process list: all undos from one process. */
-                                                /* rcu protected */
-        struct rcu_head         rcu;            /* rcu struct for sem_undo() */
-        struct sem_undo_list    *ulp;           /* sem_undo_list for the process */
-        struct list_head        list_id;        /* per semaphore array list: all undos for one array */
-        int                     semid;          /* semaphore set identifier */
-        short *                 semadj;         /* array of adjustments, one per semaphore */
-};
-
-/* sem_undo_list controls shared access to the list of sem_undo structures
- * that may be shared among all a CLONE_SYSVSEM task group.
- */ 
-struct sem_undo_list {
-        atomic_t                refcnt;
-        spinlock_t              lock;
-        struct list_head        list_proc;
-};
+#ifdef CONFIG_SYSVIPC
 
 struct sysv_sem {
         struct sem_undo_list *undo_list;
 };
 
-#ifdef CONFIG_SYSVIPC
-
 extern int copy_semundo(unsigned long clone_flags, struct task_struct *tsk);
 extern void exit_sem(struct task_struct *tsk);
 
 #else
+
+struct sysv_sem {
+        /* empty */
+};
+
 static inline int copy_semundo(unsigned long clone_flags, struct task_struct *tsk)
 {
         return 0;