btrfs: make btrfs_qgroup_reserve_data take btrfs_inode

There's only a single use of vfs_inode in a tracepoint so let's take
btrfs_inode directly.

Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

fs/btrfs/qgroup.h

@@ -344,7 +344,7 @@ int btrfs_verify_qgroup_counts(struct btrfs_fs_info *fs_info, u64 qgroupid,
 #endif
 
 /* New io_tree based accurate qgroup reserve API */
-int btrfs_qgroup_reserve_data(struct inode *inode,
+int btrfs_qgroup_reserve_data(struct btrfs_inode *inode,
 			struct extent_changeset **reserved, u64 start, u64 len);
 int btrfs_qgroup_release_data(struct btrfs_inode *inode, u64 start, u64 len);
 int btrfs_qgroup_free_data(struct btrfs_inode *inode,