release_peb
write_error: err = release_peb(ebh, pebnr);
err = release_peb(ebh, pebnr);
err = release_peb(ebh, pebnr);
err = release_peb(ebh, peb->pebnr);
err = release_peb(ebh, pebnr);
int release_peb(struct chfs_ebh *ebh, int pebnr);