60 #include "delegation.h"
1299 	/* Want no delegation if we're using O_DIRECT */  in nfs4_map_atomic_open_share()
1521 static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode,  in can_open_delegated()  argument
1524 	if (delegation == NULL)  in can_open_delegated()
1526 	if ((delegation->type & fmode) != fmode)  in can_open_delegated()
1533 		if (!test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))  in can_open_delegated()
1539 	nfs_mark_delegation_referenced(delegation);  in can_open_delegated()
1793 		const nfs4_stateid *delegation,  in update_open_stateid()  argument
1817 	if (rcu_dereference(nfsi->delegation) != deleg_cur ||  in update_open_stateid()
1822 	if (delegation == NULL)  in update_open_stateid()
1823 		delegation = &deleg_cur->stateid;  in update_open_stateid()
1824 	else if (!nfs4_stateid_match_other(&deleg_cur->stateid, delegation))  in update_open_stateid()
1867 	struct nfs_delegation *delegation;  in nfs4_return_incompatible_delegation()  local
1871 	delegation = nfs4_get_valid_delegation(inode);  in nfs4_return_incompatible_delegation()
1872 	if (delegation == NULL || (delegation->type & fmode) == fmode) {  in nfs4_return_incompatible_delegation()
1883 	struct nfs_delegation *delegation;  in nfs4_try_open_cached()  local
1899 		delegation = nfs4_get_valid_delegation(state->inode);  in nfs4_try_open_cached()
1900 		if (!can_open_delegated(delegation, fmode, claim)) {  in nfs4_try_open_cached()
1904 		/* Save the delegation */  in nfs4_try_open_cached()
1905 		nfs4_stateid_copy(&stateid, &delegation->stateid);  in nfs4_try_open_cached()
1915 		/* Try to update the stateid using the delegation */  in nfs4_try_open_cached()
1930 	struct nfs_delegation *delegation;  in nfs4_opendata_check_deleg()  local
1934 	delegation = rcu_dereference(NFS_I(state->inode)->delegation);  in nfs4_opendata_check_deleg()
1935 	if (delegation)  in nfs4_opendata_check_deleg()
1936 		delegation_flags = delegation->flags;  in nfs4_opendata_check_deleg()
1944 				   "returning a delegation for "  in nfs4_opendata_check_deleg()
1953 				&data->o_res.delegation,  in nfs4_opendata_check_deleg()
1959 				&data->o_res.delegation,  in nfs4_opendata_check_deleg()
1964 						  &data->o_res.delegation);  in nfs4_opendata_check_deleg()
2193 	struct nfs_delegation *delegation;  in _nfs4_do_open_reclaim()  local
2203 	delegation = rcu_dereference(NFS_I(state->inode)->delegation);  in _nfs4_do_open_reclaim()
2204 	if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0)  in _nfs4_do_open_reclaim()
2205 		delegation_type = delegation->type;  in _nfs4_do_open_reclaim()
2265 			/* Don't recall a delegation if it was lost */  in nfs4_handle_delegation_recall_error()
2310 	nfs4_stateid_copy(&opendata->o_arg.u.delegation, stateid);  in nfs4_open_delegation_recall()
2432 	 * a delegation instead.  in nfs4_open_prepare()
2435 		struct nfs_delegation *delegation;  in nfs4_open_prepare()  local
2441 		delegation = nfs4_get_valid_delegation(data->state->inode);  in nfs4_open_prepare()
2442 		if (can_open_delegated(delegation, data->o_arg.fmode, claim))  in nfs4_open_prepare()
2724 	 * We're not recovering a delegation, so ask for no delegation.  in _nfs4_open_expired()
2726 	 * delegation return.  in _nfs4_open_expired()
2782 	if (rcu_access_pointer(NFS_I(state->inode)->delegation) != NULL)  in nfs40_clear_delegation_stateid()
2788 	/* NFSv4.0 doesn't allow for delegation recovery on open expire */  in nfs40_open_expired()
2837 	struct nfs_delegation *delegation;  in nfs41_check_delegation_stateid()  local
2841 	/* Get the delegation credential for use by test/free_stateid */  in nfs41_check_delegation_stateid()
2843 	delegation = rcu_dereference(NFS_I(state->inode)->delegation);  in nfs41_check_delegation_stateid()
2844 	if (delegation == NULL) {  in nfs41_check_delegation_stateid()
2850 	spin_lock(&delegation->lock);  in nfs41_check_delegation_stateid()
2851 	nfs4_stateid_copy(&stateid, &delegation->stateid);  in nfs41_check_delegation_stateid()
2854 				&delegation->flags)) {  in nfs41_check_delegation_stateid()
2855 		spin_unlock(&delegation->lock);  in nfs41_check_delegation_stateid()
2860 	if (delegation->cred)  in nfs41_check_delegation_stateid()
2861 		cred = get_cred(delegation->cred);  in nfs41_check_delegation_stateid()
2862 	spin_unlock(&delegation->lock);  in nfs41_check_delegation_stateid()
3287 			/* We must have found a delegation */  in nfs4_do_open()
5450 	 * a delegation  in nfs4_write_need_cache_consistency_data()
7271 		/* ...but avoid races with delegation recall... */  in _nfs4_proc_setlk()