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Commit a78cb57a authored by Trond Myklebust's avatar Trond Myklebust
Browse files

NFSv4: Don't loop forever on state recovery failure... 



If the server is broken, then retrying forever won't fix it. We
should just give up after a while, and return an error to the user.
We set the number of retries to 10 for now...

Signed-off-by: default avatarTrond Myklebust <Trond.Myklebust@netapp.com>
parent dd8ac1da

fs/nfs/nfs4proc.c

+12 −6
Original line number Diff line number Diff line
@@ -61,6 +61,8 @@ 
#define NFS4_POLL_RETRY_MIN	(HZ/10)

#define NFS4_POLL_RETRY_MAX	(15*HZ)



#define NFS4_MAX_LOOP_ON_RECOVER (10)



struct nfs4_opendata;

static int _nfs4_proc_open(struct nfs4_opendata *data);

static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *);
@@ -426,17 +428,19 @@ out: 
static int nfs4_recover_session(struct nfs4_session *session)

{

	struct nfs_client *clp = session->clp;

	unsigned int loop;

	int ret;



	for (;;) {

	for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) {

		ret = nfs4_wait_clnt_recover(clp);

		if (ret != 0)

				return ret;

			break;

		if (!test_bit(NFS4CLNT_SESSION_SETUP, &clp->cl_state))

			break;

		nfs4_schedule_state_manager(clp);

		ret = -EIO;

	}

	return 0;

	return ret;

}



static int nfs41_setup_sequence(struct nfs4_session *session,
@@ -1444,18 +1448,20 @@ static int _nfs4_proc_open(struct nfs4_opendata *data) 
static int nfs4_recover_expired_lease(struct nfs_server *server)

{

	struct nfs_client *clp = server->nfs_client;

	unsigned int loop;

	int ret;



	for (;;) {

	for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) {

		ret = nfs4_wait_clnt_recover(clp);

		if (ret != 0)

			return ret;

			break;

		if (!test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) &&

		    !test_bit(NFS4CLNT_CHECK_LEASE,&clp->cl_state))

			break;

		nfs4_schedule_state_recovery(clp);

		ret = -EIO;

	}

	return 0;

	return ret;

}



/*