fs/locks: split out __locks_wake_up_blocks().

This functionality will be useful in future patches, so
split it out from locks_wake_up_blocks().
Signed-off-by: NeilBrown <neilb@suse.com>
Reviewed-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Jeff Layton <jlayton@kernel.org>

fs/locks.c

@@ -672,6 +672,21 @@ static void __locks_delete_block(struct file_lock *waiter)
 	waiter->fl_blocker = NULL;
 }
 
+static void __locks_wake_up_blocks(struct file_lock *blocker)
+{
+	while (!list_empty(&blocker->fl_blocked_requests)) {
+		struct file_lock *waiter;
+
+		waiter = list_first_entry(&blocker->fl_blocked_requests,
+					  struct file_lock, fl_blocked_member);
+		__locks_delete_block(waiter);
+		if (waiter->fl_lmops && waiter->fl_lmops->lm_notify)
+			waiter->fl_lmops->lm_notify(waiter);
+		else
+			wake_up(&waiter->fl_wait);
+	}
+}
+
 static void locks_delete_block(struct file_lock *waiter)
 {
 	spin_lock(&blocked_lock_lock);
@@ -727,17 +742,7 @@ static void locks_wake_up_blocks(struct file_lock *blocker)
 		return;
 
 	spin_lock(&blocked_lock_lock);
-	while (!list_empty(&blocker->fl_blocked_requests)) {
-		struct file_lock *waiter;
-
-		waiter = list_first_entry(&blocker->fl_blocked_requests,
-				struct file_lock, fl_blocked_member);
-		__locks_delete_block(waiter);
-		if (waiter->fl_lmops && waiter->fl_lmops->lm_notify)
-			waiter->fl_lmops->lm_notify(waiter);
-		else
-			wake_up(&waiter->fl_wait);
-	}
+	__locks_wake_up_blocks(blocker);
 	spin_unlock(&blocked_lock_lock);
 }