pprivate_head 114 include/xen/grant_table.h int gnttab_alloc_grant_references(u16 count, grant_ref_t *pprivate_head); pprivate_head 120 include/xen/grant_table.h int gnttab_empty_grant_references(const grant_ref_t *pprivate_head); pprivate_head 122 include/xen/grant_table.h int gnttab_claim_grant_reference(grant_ref_t *pprivate_head);