303 	struct grant *gnt_list_entry, *n;  in fill_grant_buffer()  local
307 		gnt_list_entry = kzalloc(sizeof(struct grant), GFP_NOIO);  in fill_grant_buffer()
308 		if (!gnt_list_entry)  in fill_grant_buffer()
314 				kfree(gnt_list_entry);  in fill_grant_buffer()
317 			gnt_list_entry->page = granted_page;  in fill_grant_buffer()
320 		gnt_list_entry->gref = GRANT_INVALID_REF;  in fill_grant_buffer()
321 		list_add(&gnt_list_entry->node, &rinfo->grants);  in fill_grant_buffer()
328 	list_for_each_entry_safe(gnt_list_entry, n,  in fill_grant_buffer()
330 		list_del(&gnt_list_entry->node);  in fill_grant_buffer()
332 			__free_page(gnt_list_entry->page);  in fill_grant_buffer()
333 		kfree(gnt_list_entry);  in fill_grant_buffer()
342 	struct grant *gnt_list_entry;  in get_free_grant()  local
345 	gnt_list_entry = list_first_entry(&rinfo->grants, struct grant,  in get_free_grant()
347 	list_del(&gnt_list_entry->node);  in get_free_grant()
349 	if (gnt_list_entry->gref != GRANT_INVALID_REF)  in get_free_grant()
352 	return gnt_list_entry;  in get_free_grant()
355 static inline void grant_foreign_access(const struct grant *gnt_list_entry,  in grant_foreign_access()  argument
358 	gnttab_page_grant_foreign_access_ref_one(gnt_list_entry->gref,  in grant_foreign_access()
360 						 gnt_list_entry->page,  in grant_foreign_access()
368 	struct grant *gnt_list_entry = get_free_grant(rinfo);  in get_grant()  local
371 	if (gnt_list_entry->gref != GRANT_INVALID_REF)  in get_grant()
372 		return gnt_list_entry;  in get_grant()
375 	gnt_list_entry->gref = gnttab_claim_grant_reference(gref_head);  in get_grant()
376 	BUG_ON(gnt_list_entry->gref == -ENOSPC);  in get_grant()
378 		grant_foreign_access(gnt_list_entry, info);  in get_grant()
381 		gnttab_grant_foreign_access_ref(gnt_list_entry->gref,  in get_grant()
386 	return gnt_list_entry;  in get_grant()
392 	struct grant *gnt_list_entry = get_free_grant(rinfo);  in get_indirect_grant()  local
395 	if (gnt_list_entry->gref != GRANT_INVALID_REF)  in get_indirect_grant()
396 		return gnt_list_entry;  in get_indirect_grant()
399 	gnt_list_entry->gref = gnttab_claim_grant_reference(gref_head);  in get_indirect_grant()
400 	BUG_ON(gnt_list_entry->gref == -ENOSPC);  in get_indirect_grant()
409 		gnt_list_entry->page = indirect_page;  in get_indirect_grant()
411 	grant_foreign_access(gnt_list_entry, info);  in get_indirect_grant()
413 	return gnt_list_entry;  in get_indirect_grant()
599 	struct grant *gnt_list_entry;  in blkif_setup_rw_req_grant()  local
629 		gnt_list_entry = get_indirect_grant(&setup->gref_head, rinfo);  in blkif_setup_rw_req_grant()
630 		shadow->indirect_grants[n] = gnt_list_entry;  in blkif_setup_rw_req_grant()
631 		setup->segments = kmap_atomic(gnt_list_entry->page);  in blkif_setup_rw_req_grant()
632 		ring_req->u.indirect.indirect_grefs[n] = gnt_list_entry->gref;  in blkif_setup_rw_req_grant()
635 	gnt_list_entry = get_grant(&setup->gref_head, gfn, rinfo);  in blkif_setup_rw_req_grant()
636 	ref = gnt_list_entry->gref;  in blkif_setup_rw_req_grant()
641 	shadow->grants_used[setup->grant_idx] = gnt_list_entry;  in blkif_setup_rw_req_grant()
646 		shared_data = kmap_atomic(gnt_list_entry->page);  in blkif_setup_rw_req_grant()
2675 		struct grant *gnt_list_entry, *tmp;  in purge_persistent_grants()  local
2684 		list_for_each_entry_safe(gnt_list_entry, tmp, &rinfo->grants,  in purge_persistent_grants()
2686 			if (gnt_list_entry->gref == GRANT_INVALID_REF ||  in purge_persistent_grants()
2687 			    gnttab_query_foreign_access(gnt_list_entry->gref))  in purge_persistent_grants()
2690 			list_del(&gnt_list_entry->node);  in purge_persistent_grants()
2691 			gnttab_end_foreign_access(gnt_list_entry->gref, 0, 0UL);  in purge_persistent_grants()
2693 			gnt_list_entry->gref = GRANT_INVALID_REF;  in purge_persistent_grants()
2694 			list_add_tail(&gnt_list_entry->node, &rinfo->grants);  in purge_persistent_grants()