60 #include "delegation.h"
1340 	/* Want no delegation if we're using O_DIRECT */  in nfs4_map_atomic_open_share()
1551 static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode,  in can_open_delegated()  argument
1554 	if (delegation == NULL)  in can_open_delegated()
1556 	if ((delegation->type & fmode) != fmode)  in can_open_delegated()
1563 		if (!test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))  in can_open_delegated()
1569 	nfs_mark_delegation_referenced(delegation);  in can_open_delegated()
1823 		const nfs4_stateid *delegation,  in update_open_stateid()  argument
1847 	if (rcu_dereference(nfsi->delegation) != deleg_cur ||  in update_open_stateid()
1852 	if (delegation == NULL)  in update_open_stateid()
1853 		delegation = &deleg_cur->stateid;  in update_open_stateid()
1854 	else if (!nfs4_stateid_match_other(&deleg_cur->stateid, delegation))  in update_open_stateid()
1897 	struct nfs_delegation *delegation;  in nfs4_return_incompatible_delegation()  local
1901 	delegation = nfs4_get_valid_delegation(inode);  in nfs4_return_incompatible_delegation()
1902 	if (delegation == NULL || (delegation->type & fmode) == fmode) {  in nfs4_return_incompatible_delegation()
1913 	struct nfs_delegation *delegation;  in nfs4_try_open_cached()  local
1929 		delegation = nfs4_get_valid_delegation(state->inode);  in nfs4_try_open_cached()
1930 		if (!can_open_delegated(delegation, fmode, claim)) {  in nfs4_try_open_cached()
1934 		/* Save the delegation */  in nfs4_try_open_cached()
1935 		nfs4_stateid_copy(&stateid, &delegation->stateid);  in nfs4_try_open_cached()
1945 		/* Try to update the stateid using the delegation */  in nfs4_try_open_cached()
1960 	struct nfs_delegation *delegation;  in nfs4_opendata_check_deleg()  local
1964 	delegation = rcu_dereference(NFS_I(state->inode)->delegation);  in nfs4_opendata_check_deleg()
1965 	if (delegation)  in nfs4_opendata_check_deleg()
1966 		delegation_flags = delegation->flags;  in nfs4_opendata_check_deleg()
1974 				   "returning a delegation for "  in nfs4_opendata_check_deleg()
1983 				&data->o_res.delegation,  in nfs4_opendata_check_deleg()
1989 				&data->o_res.delegation,  in nfs4_opendata_check_deleg()
1994 						  &data->o_res.delegation);  in nfs4_opendata_check_deleg()
2223 	struct nfs_delegation *delegation;  in _nfs4_do_open_reclaim()  local
2233 	delegation = rcu_dereference(NFS_I(state->inode)->delegation);  in _nfs4_do_open_reclaim()
2234 	if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0)  in _nfs4_do_open_reclaim()
2235 		delegation_type = delegation->type;  in _nfs4_do_open_reclaim()
2296 			/* Don't recall a delegation if it was lost */  in nfs4_handle_delegation_recall_error()
2341 	nfs4_stateid_copy(&opendata->o_arg.u.delegation, stateid);  in nfs4_open_delegation_recall()
2463 	 * a delegation instead.  in nfs4_open_prepare()
2466 		struct nfs_delegation *delegation;  in nfs4_open_prepare()  local
2472 		delegation = nfs4_get_valid_delegation(data->state->inode);  in nfs4_open_prepare()
2473 		if (can_open_delegated(delegation, data->o_arg.fmode, claim))  in nfs4_open_prepare()
2757 	 * We're not recovering a delegation, so ask for no delegation.  in _nfs4_open_expired()
2759 	 * delegation return.  in _nfs4_open_expired()
2815 	if (rcu_access_pointer(NFS_I(state->inode)->delegation) != NULL)  in nfs40_clear_delegation_stateid()
2821 	/* NFSv4.0 doesn't allow for delegation recovery on open expire */  in nfs40_open_expired()
2870 	struct nfs_delegation *delegation;  in nfs41_check_delegation_stateid()  local
2874 	/* Get the delegation credential for use by test/free_stateid */  in nfs41_check_delegation_stateid()
2876 	delegation = rcu_dereference(NFS_I(state->inode)->delegation);  in nfs41_check_delegation_stateid()
2877 	if (delegation == NULL) {  in nfs41_check_delegation_stateid()
2883 	spin_lock(&delegation->lock);  in nfs41_check_delegation_stateid()
2884 	nfs4_stateid_copy(&stateid, &delegation->stateid);  in nfs41_check_delegation_stateid()
2887 				&delegation->flags)) {  in nfs41_check_delegation_stateid()
2888 		spin_unlock(&delegation->lock);  in nfs41_check_delegation_stateid()
2893 	if (delegation->cred)  in nfs41_check_delegation_stateid()
2894 		cred = get_cred(delegation->cred);  in nfs41_check_delegation_stateid()
2895 	spin_unlock(&delegation->lock);  in nfs41_check_delegation_stateid()
3308 			/* We must have found a delegation */  in nfs4_do_open()
5592 	 * a delegation  in nfs4_write_need_cache_consistency_data()
7412 		/* ...but avoid races with delegation recall... */  in _nfs4_proc_setlk()
7611 	/* No delegation, no lease */  in nfs4_add_lease()
7617 	/* We raced with a delegation return */  in nfs4_add_lease()