X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=include%2Flinux%2Fsem.h;h=1b191c176bcd33ecfe5f16d41ff53376635e52c0;hb=0d0f3ef248e359b7363830fbd6df23897bbd1ceb;hp=c8eaad9e4b72afacb1725204abbda308df0b3d45;hpb=cfa76f024f7c9e65169425804e5b32e71f66d0ee;p=linux-2.6-omap-h63xx.git

diff --git a/include/linux/sem.h b/include/linux/sem.h
index c8eaad9e4b7..1b191c176bc 100644
--- a/include/linux/sem.h
+++ b/include/linux/sem.h
@@ -78,6 +78,7 @@ struct  seminfo {
 
 #ifdef __KERNEL__
 #include <asm/atomic.h>
+#include <linux/rcupdate.h>
 
 struct task_struct;
 
@@ -93,23 +94,19 @@ struct sem_array {
 	time_t			sem_otime;	/* last semop time */
 	time_t			sem_ctime;	/* last change time */
 	struct sem		*sem_base;	/* ptr to first semaphore in array */
-	struct sem_queue	*sem_pending;	/* pending operations to be processed */
-	struct sem_queue	**sem_pending_last; /* last pending operation */
-	struct sem_undo		*undo;		/* undo requests on this array */
+	struct list_head	sem_pending;	/* pending operations to be processed */
+	struct list_head	list_id;	/* undo requests on this array */
 	unsigned long		sem_nsems;	/* no. of semaphores in array */
 };
 
 /* One queue for each sleeping process in the system. */
 struct sem_queue {
-	struct sem_queue *	next;	 /* next entry in the queue */
-	struct sem_queue **	prev;	 /* previous entry in the queue, *(q->prev) == q */
-	struct task_struct*	sleeper; /* this process */
-	struct sem_undo *	undo;	 /* undo structure */
+	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 sem_array *	sma;	 /* semaphore array for operations */
-	int			id;	 /* internal sem id */
-	struct sembuf *		sops;	 /* array of pending operations */
+	struct sembuf		*sops;	 /* array of pending operations */
 	int			nsops;	 /* number of operations */
 	int			alter;   /* does the operation alter the array? */
 };
@@ -118,8 +115,11 @@ struct sem_queue {
  * when the process exits.
  */
 struct sem_undo {
-	struct sem_undo *	proc_next;	/* next entry on this process */
-	struct sem_undo *	id_next;	/* next entry on this semaphore set */
+	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 */
 };
@@ -128,9 +128,9 @@ struct sem_undo {
  * that may be shared among all a CLONE_SYSVSEM task group.
  */ 
 struct sem_undo_list {
-	atomic_t	refcnt;
-	spinlock_t	lock;
-	struct sem_undo	*proc_list;
+	atomic_t		refcnt;
+	spinlock_t		lock;
+	struct list_head	list_proc;
 };
 
 struct sysv_sem {