NFSv4: Handle more errors when recovering open file and locking state
It is possible for servers to return NFS4ERR_BAD_STATEID when
the state management code is recovering locks or is reclaiming state when
returning a delegation. Ensure that we handle that case.
While we're at it, add in handlers for NFS4ERR_STALE,
NFS4ERR_ADMIN_REVOKED, NFS4ERR_OPENMODE, NFS4ERR_DENIED and
NFS4ERR_STALE_STATEID, since the protocol appears to allow for them too.
Also handle ENOMEM...
Finally, rather than add new NFSv4.0-specific errors and error handling into
the generic delegation code, move that open file and locking state error
handling into the NFSv4 layer.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
index 0298e90..6e094e9 100644
--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -854,25 +854,29 @@
if (nfs_file_open_context(fl->fl_file)->state != state)
continue;
status = ops->recover_lock(state, fl);
- if (status >= 0)
- continue;
switch (status) {
+ case 0:
+ break;
+ case -ESTALE:
+ case -NFS4ERR_ADMIN_REVOKED:
+ case -NFS4ERR_STALE_STATEID:
+ case -NFS4ERR_BAD_STATEID:
+ case -NFS4ERR_EXPIRED:
+ case -NFS4ERR_NO_GRACE:
+ case -NFS4ERR_STALE_CLIENTID:
+ goto out;
default:
printk(KERN_ERR "%s: unhandled error %d. Zeroing state\n",
__func__, status);
- case -NFS4ERR_EXPIRED:
- case -NFS4ERR_NO_GRACE:
+ case -ENOMEM:
+ case -NFS4ERR_DENIED:
case -NFS4ERR_RECLAIM_BAD:
case -NFS4ERR_RECLAIM_CONFLICT:
/* kill_proc(fl->fl_pid, SIGLOST, 1); */
- break;
- case -NFS4ERR_STALE_CLIENTID:
- goto out_err;
+ status = 0;
}
}
- up_write(&nfsi->rwsem);
- return 0;
-out_err:
+out:
up_write(&nfsi->rwsem);
return status;
}
@@ -918,6 +922,7 @@
printk(KERN_ERR "%s: unhandled error %d. Zeroing state\n",
__func__, status);
case -ENOENT:
+ case -ENOMEM:
case -ESTALE:
/*
* Open state on this file cannot be recovered
@@ -928,6 +933,9 @@
/* Mark the file as being 'closed' */
state->state = 0;
break;
+ case -NFS4ERR_ADMIN_REVOKED:
+ case -NFS4ERR_STALE_STATEID:
+ case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_RECLAIM_BAD:
case -NFS4ERR_RECLAIM_CONFLICT:
nfs4_state_mark_reclaim_nograce(sp->so_client, state);