NFS: Move nfs_probe_destination() into the generic client

And rename it to nfs_probe_server(). I also change it to take the nfs_fh
as an argument so callers can choose what filehandle to probe.

Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>

1 files changed, 24 insertions, 0 deletions

diff --git a/fs/nfs/client.c b/fs/nfs/client.c
index 23e165d5ec9c..e867d9090386 100644
--- a/fs/nfs/client.c
+++ b/fs/nfs/client.c
@@ -865,6 +865,30 @@ int nfs_probe_fsinfo(struct nfs_server *server, struct nfs_fh *mntfh, struct nfs
 EXPORT_SYMBOL_GPL(nfs_probe_fsinfo);
 
 /*
+ * Grab the destination's particulars, including lease expiry time.
+ *
+ * Returns zero if probe succeeded and retrieved FSID matches the FSID
+ * we have cached.
+ */
+int nfs_probe_server(struct nfs_server *server, struct nfs_fh *mntfh)
+{
+	struct nfs_fattr *fattr;
+	int error;
+
+	fattr = nfs_alloc_fattr();
+	if (fattr == NULL)
+		return -ENOMEM;
+
+	/* Sanity: the probe won't work if the destination server
+	 * does not recognize the migrated FH. */
+	error = nfs_probe_fsinfo(server, mntfh, fattr);
+
+	nfs_free_fattr(fattr);
+	return error;
+}
+EXPORT_SYMBOL_GPL(nfs_probe_server);
+
+/*
  * Copy useful information when duplicating a server record
  */
 void nfs_server_copy_userdata(struct nfs_server *target, struct nfs_server *source)