__dquot_free_space
EXPORT_SYMBOL(__dquot_free_space);
__dquot_free_space(inode, nr, 0);
__dquot_free_space(inode, nr << inode->i_blkbits, DQUOT_SPACE_RESERVE);
void __dquot_free_space(struct inode *inode, qsize_t number, int flags);