int gfs2_dir_add(struct inode *inode, const struct qstr *filename,
const struct gfs2_inum *inum, unsigned int type);
int gfs2_dir_del(struct gfs2_inode *dip, const struct qstr *filename);
int gfs2_dir_add(struct inode *inode, const struct qstr *filename,
const struct gfs2_inum *inum, unsigned int type);
int gfs2_dir_del(struct gfs2_inode *dip, const struct qstr *filename);