hpfs_alloc_if_possible
if (!hpfs_alloc_if_possible(s, sec + n + i)) {
if (hpfs_alloc_if_possible(s, se = le32_to_cpu(btree->u.external[n].disk_secno) + le32_to_cpu(btree->u.external[n].length))) {
if (hpfs_alloc_if_possible(s, le32_to_cpu(fnode->ea_secno) + len)) {
int hpfs_alloc_if_possible(struct super_block *, secno);