Btrfs: use unlocked_ioctl

No reason to grab the BKL before calling into the btrfs ioctl code.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 6d6e94b..800a349 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -1219,10 +1219,7 @@
 void btrfs_destroy_inode(struct inode *inode);
 int btrfs_init_cachep(void);
 void btrfs_destroy_cachep(void);
-int btrfs_ioctl(struct inode *inode, struct file *filp, unsigned int cmd,
-		unsigned long arg);
-long btrfs_compat_ioctl(struct file *file, unsigned int cmd,
-			       unsigned long arg);
+long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
 struct inode *btrfs_iget_locked(struct super_block *s, u64 objectid,
 				struct btrfs_root *root);
 int btrfs_commit_write(struct file *file, struct page *page,