Commit b6d408ba authored by Trond Myklebust's avatar Trond Myklebust
Browse files

NFSv4: Fix up error handling in the state manager main loop. 



The nfs4_state_manager should not be looking at the error values when
deciding whether or not to loop round in order to handle a higher priority
state recovery task. It should rather be looking at the clp->cl_state.

Signed-off-by: default avatarTrond Myklebust <Trond.Myklebust@netapp.com>
parent a9ed2e25

fs/nfs/nfs4state.c

+21 −27
Original line number Diff line number Diff line
@@ -1046,11 +1046,6 @@ static void nfs4_state_start_reclaim_nograce(struct nfs_client *clp) 
	nfs4_state_mark_reclaim_helper(clp, nfs4_state_mark_reclaim_nograce);

}



static void nfs4_state_end_reclaim_nograce(struct nfs_client *clp)

{

	clear_bit(NFS4CLNT_RECLAIM_NOGRACE, &clp->cl_state);

}



static int nfs4_recovery_handle_error(struct nfs_client *clp, int error)

{

	switch (error) {
@@ -1237,7 +1232,8 @@ static void nfs4_state_manager(struct nfs_client *clp) 
			status = nfs4_reclaim_lease(clp);

			if (status) {

				nfs4_set_lease_expired(clp, status);

				if (status == -EAGAIN)

				if (test_bit(NFS4CLNT_LEASE_EXPIRED,

							&clp->cl_state))

					continue;

				if (clp->cl_cons_state ==

							NFS_CS_SESSION_INITING)
@@ -1249,9 +1245,12 @@ static void nfs4_state_manager(struct nfs_client *clp) 


		if (test_and_clear_bit(NFS4CLNT_CHECK_LEASE, &clp->cl_state)) {

			status = nfs4_check_lease(clp);

			if (status != 0)

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

				continue;

			if (status < 0 && status != -NFS4ERR_CB_PATH_DOWN)

				goto out_error;

		}



		/* Initialize or reset the session */

		if (test_and_clear_bit(NFS4CLNT_SESSION_SETUP, &clp->cl_state)

		   && nfs4_has_session(clp)) {
@@ -1259,41 +1258,36 @@ static void nfs4_state_manager(struct nfs_client *clp) 
				status = nfs4_initialize_session(clp);

			else

				status = nfs4_reset_session(clp);

			if (status) {

				if (status == -NFS4ERR_STALE_CLIENTID)

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

				continue;

			if (status < 0)

				goto out_error;

		}

		}



		/* First recover reboot state... */

		if (test_bit(NFS4CLNT_RECLAIM_REBOOT, &clp->cl_state)) {

			status = nfs4_do_reclaim(clp,

				nfs4_reboot_recovery_ops[clp->cl_minorversion]);

			if (status == -NFS4ERR_STALE_CLIENTID)

				continue;

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

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

			    test_bit(NFS4CLNT_SESSION_SETUP, &clp->cl_state))

				continue;

			nfs4_state_end_reclaim_reboot(clp);

			if (test_bit(NFS4CLNT_RECLAIM_NOGRACE, &clp->cl_state))

				continue;

			if (status < 0)

				goto out_error;

		}



		/* Now recover expired state... */

		if (test_and_clear_bit(NFS4CLNT_RECLAIM_NOGRACE, &clp->cl_state)) {

			status = nfs4_do_reclaim(clp,

				nfs4_nograce_recovery_ops[clp->cl_minorversion]);

			if (status < 0) {

				set_bit(NFS4CLNT_RECLAIM_NOGRACE, &clp->cl_state);

				if (status == -NFS4ERR_STALE_CLIENTID)

					continue;

				if (status == -NFS4ERR_EXPIRED)

					continue;

				if (test_bit(NFS4CLNT_SESSION_SETUP,

								&clp->cl_state))

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

			    test_bit(NFS4CLNT_SESSION_SETUP, &clp->cl_state) ||

			    test_bit(NFS4CLNT_RECLAIM_REBOOT, &clp->cl_state))

				continue;

			if (status < 0)

				goto out_error;

			} else

				nfs4_state_end_reclaim_nograce(clp);

			continue;

		}



		if (test_and_clear_bit(NFS4CLNT_DELEGRETURN, &clp->cl_state)) {

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