block: unexport truncate_bdev_range

truncate_bdev_range is only used in always built-in block layer code,
so remove the export and the !CONFIG_BLOCK stub.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

fs/block_dev.c

@@ -126,7 +126,6 @@ int truncate_bdev_range(struct block_device *bdev, fmode_t mode,
 		bd_abort_claiming(bdev, truncate_bdev_range);
 	return 0;
 }
-EXPORT_SYMBOL(truncate_bdev_range);
 
 static void set_init_blocksize(struct block_device *bdev)
 {

include/linux/blkdev.h

@@ -1999,21 +1999,16 @@ void bdev_add(struct block_device *bdev, dev_t dev);
 struct block_device *I_BDEV(struct inode *inode);
 struct block_device *bdgrab(struct block_device *bdev);
 void bdput(struct block_device *);
+int truncate_bdev_range(struct block_device *bdev, fmode_t mode, loff_t lstart,
+		loff_t lend);
 
 #ifdef CONFIG_BLOCK
 void invalidate_bdev(struct block_device *bdev);
-int truncate_bdev_range(struct block_device *bdev, fmode_t mode, loff_t lstart,
-			loff_t lend);
 int sync_blockdev(struct block_device *bdev);
 #else
 static inline void invalidate_bdev(struct block_device *bdev)
 {
 }
-static inline int truncate_bdev_range(struct block_device *bdev, fmode_t mode,
-				      loff_t lstart, loff_t lend)
-{
-	return 0;
-}
 static inline int sync_blockdev(struct block_device *bdev)
 {
 	return 0;