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Commit 199ff35e authored by Ricardo Labiaga's avatar Ricardo Labiaga Committed by J. Bruce Fields
Browse files

nfsd41: Backchannel: Server backchannel RPC wait queue 



RPC callback requests will wait on this wait queue if the backchannel
is out of slots.

Signed-off-by: default avatarRicardo Labiaga <Ricardo.Labiaga@netapp.com>
Signed-off-by: default avatarBenny Halevy <bhalevy@panasas.com>
Signed-off-by: default avatarJ. Bruce Fields <bfields@citi.umich.edu>
parent 132f9771

fs/nfsd/nfs4state.c

+2 −0
Original line number Diff line number Diff line
@@ -775,6 +775,8 @@ static struct nfs4_client *create_client(struct xdr_netobj name, char *recdir) 
	INIT_LIST_HEAD(&clp->cl_delegations);

	INIT_LIST_HEAD(&clp->cl_sessions);

	INIT_LIST_HEAD(&clp->cl_lru);

	clear_bit(0, &clp->cl_cb_slot_busy);

	rpc_init_wait_queue(&clp->cl_cb_waitq, "Backchannel slot table");

	return clp;

}

include/linux/nfsd/state.h

+4 −0
Original line number Diff line number Diff line
@@ -219,7 +219,11 @@ struct nfs4_client { 
	struct nfs4_sessionid	cl_sessionid;



	/* for nfs41 callbacks */

	/* We currently support a single back channel with a single slot */

	unsigned long		cl_cb_slot_busy;

	struct svc_xprt		*cl_cb_xprt;	/* 4.1 callback transport */

	struct rpc_wait_queue	cl_cb_waitq;	/* backchannel callers may */

						/* wait here for slots */

};



/* struct nfs4_client_reset