block: mark invalidate_partition static

invalidate_partition is only used in genhd.c, so mark it static.  Also
drop the return value given that is is always ignored.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

block/genhd.c

@@ -878,6 +878,19 @@ void device_add_disk_no_queue_reg(struct device *parent, struct gendisk *disk)
 }
 EXPORT_SYMBOL(device_add_disk_no_queue_reg);
 
+static void invalidate_partition(struct gendisk *disk, int partno)
+{
+	struct block_device *bdev;
+
+	bdev = bdget_disk(disk, partno);
+	if (!bdev)
+		return;
+
+	fsync_bdev(bdev);
+	__invalidate_device(bdev, true);
+	bdput(bdev);
+}
+
 void del_gendisk(struct gendisk *disk)
 {
 	struct disk_part_iter piter;
@@ -1806,20 +1819,6 @@ int bdev_read_only(struct block_device *bdev)
 
 EXPORT_SYMBOL(bdev_read_only);
 
-int invalidate_partition(struct gendisk *disk, int partno)
-{
-	int res = 0;
-	struct block_device *bdev = bdget_disk(disk, partno);
-	if (bdev) {
-		fsync_bdev(bdev);
-		res = __invalidate_device(bdev, true);
-		bdput(bdev);
-	}
-	return res;
-}
-
-EXPORT_SYMBOL(invalidate_partition);
-
 /*
  * Disk events - monitor disk events like media change and eject request.
  */

include/linux/fs.h

@@ -2723,7 +2723,6 @@ extern bool is_bad_inode(struct inode *);
 extern int revalidate_disk(struct gendisk *);
 extern int check_disk_change(struct block_device *);
 extern int __invalidate_device(struct block_device *, bool);
-extern int invalidate_partition(struct gendisk *, int);
 #endif
 unsigned long invalidate_mapping_pages(struct address_space *mapping,
 					pgoff_t start, pgoff_t end);