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NFSv4: The state manager shouldn't exit on errors that were handled 

nfs4_recovery_handle_error() will correctly handle errors such as
NFS4ERR_CB_PATH_DOWN, however because they are still passed back to the
main loop in nfs4_state_manager(), they can cause the latter to exit
prematurely.

Fix this by letting nfs4_recovery_handle_error() change the error value in
cases where there is no action required by the caller.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Trond Myklebust 2009-12-03 15:53:20 -05:00
parent e345e88a77
commit 4f7cdf18e1
1 changed files with 5 additions and 6 deletions
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11
fs/nfs/nfs4state.c
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@ -1051,12 +1051,12 @@ static void nfs4_state_end_reclaim_nograce(struct nfs_client *clp)
clear_bit(NFS4CLNT_RECLAIM_NOGRACE, &clp->cl_state); clear_bit(NFS4CLNT_RECLAIM_NOGRACE, &clp->cl_state);
} }
static void nfs4_recovery_handle_error(struct nfs_client *clp, int error) static int nfs4_recovery_handle_error(struct nfs_client *clp, int error)
{ {
switch (error) { switch (error) {
case -NFS4ERR_CB_PATH_DOWN: case -NFS4ERR_CB_PATH_DOWN:
nfs_handle_cb_pathdown(clp); nfs_handle_cb_pathdown(clp);
break; return 0;
case -NFS4ERR_STALE_CLIENTID: case -NFS4ERR_STALE_CLIENTID:
case -NFS4ERR_LEASE_MOVED: case -NFS4ERR_LEASE_MOVED:
set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state); set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state);
@ -1075,6 +1075,7 @@ static void nfs4_recovery_handle_error(struct nfs_client *clp, int error)
case -NFS4ERR_SEQ_MISORDERED: case -NFS4ERR_SEQ_MISORDERED:
set_bit(NFS4CLNT_SESSION_SETUP, &clp->cl_state); set_bit(NFS4CLNT_SESSION_SETUP, &clp->cl_state);
} }
return error;
} }
static int nfs4_do_reclaim(struct nfs_client *clp, const struct nfs4_state_recovery_ops *ops) static int nfs4_do_reclaim(struct nfs_client *clp, const struct nfs4_state_recovery_ops *ops)
@ -1094,8 +1095,7 @@ restart:
if (status < 0) { if (status < 0) {
set_bit(ops->owner_flag_bit, &sp->so_flags); set_bit(ops->owner_flag_bit, &sp->so_flags);
nfs4_put_state_owner(sp); nfs4_put_state_owner(sp);
nfs4_recovery_handle_error(clp, status); return nfs4_recovery_handle_error(clp, status);
return status;
} }
nfs4_put_state_owner(sp); nfs4_put_state_owner(sp);
goto restart; goto restart;
@ -1125,8 +1125,7 @@ static int nfs4_check_lease(struct nfs_client *clp)
status = ops->renew_lease(clp, cred); status = ops->renew_lease(clp, cred);
put_rpccred(cred); put_rpccred(cred);
out: out:
nfs4_recovery_handle_error(clp, status); return nfs4_recovery_handle_error(clp, status);
return status;
} }
static int nfs4_reclaim_lease(struct nfs_client *clp) static int nfs4_reclaim_lease(struct nfs_client *clp)