[XFS] remove two dead members from pagebuf_daemon

SGI Modid: 2.5.x-xfs:slinx:134222a

fs/xfs/pagebuf/page_buf.c

@@ -1597,9 +1597,8 @@ pagebuf_delwri_queue(
 			atomic_dec(&pb->pb_hold);
 		}
 		list_del(&pb->pb_list);
-	} else {
-		pb_daemon->pb_delwri_cnt++;
 	}
+
 	list_add_tail(&pb->pb_list, &pb_daemon->pb_delwrite_l);
 	PBP(pb)->pb_flushtime = jiffies + pb_params.p_un.age_buffer;
 	spin_unlock(&pb_daemon->pb_delwrite_lock);
@@ -1617,7 +1616,6 @@ pagebuf_delwri_dequeue(
 	spin_lock(&pb_daemon->pb_delwrite_lock);
 	list_del_init(&pb->pb_list);
 	pb->pb_flags &= ~PBF_DELWRI;
-	pb_daemon->pb_delwri_cnt--;
 	spin_unlock(&pb_daemon->pb_delwrite_lock);
 }
 
@@ -1812,8 +1810,6 @@ pagebuf_daemon_start(void)
 		}
 
 		pb_daemon->active = 1;
-		pb_daemon->io_active = 1;
-		pb_daemon->pb_delwri_cnt = 0;
 		pb_daemon->pb_delwrite_lock = SPIN_LOCK_UNLOCKED;
 
 		INIT_LIST_HEAD(&pb_daemon->pb_delwrite_l);
@@ -1840,7 +1836,6 @@ pagebuf_daemon_stop(void)
 		destroy_workqueue(pagebuf_workqueue);
 
 		pb_daemon->active = 0;
-		pb_daemon->io_active = 0;
 
 		wake_up_interruptible(&pbd_waitq);
 		while (pb_daemon->active == 0) {

fs/xfs/pagebuf/page_buf_internal.h

@@ -97,10 +97,8 @@ struct pagebuf_trace_buf {
 
 typedef struct pagebuf_daemon {
 	int			active;
-	int			io_active;
 	spinlock_t		pb_delwrite_lock;
 	struct list_head	pb_delwrite_l;
-	int			pb_delwri_cnt;
 } pagebuf_daemon_t;
 
 /*