nfsd: warn about impending removal of nfsdcld upcall

Let's shoot for removing the nfsdcld upcall in 3.10. Most likely,
no one is actually using it so I don't expect this warning to
fire often (except maybe on misconfigured systems).

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/fs/nfsd/nfs4recover.c b/fs/nfsd/nfs4recover.c
index 38af61556895..6aaf5d92a43c 100644
--- a/fs/nfsd/nfs4recover.c
+++ b/fs/nfsd/nfs4recover.c
@@ -1166,6 +1166,9 @@ nfsd4_client_tracking_init(struct net *net)
 
         /* Finally, try to use nfsdcld */
         client_tracking_ops = &nfsd4_cld_tracking_ops;
+        printk(KERN_WARNING "NFSD: the nfsdcld client tracking upcall will be "
+                        "removed in 3.10. Please transition to using "
+                        "nfsdcltrack.\n");
 do_init:
         status = client_tracking_ops->init(net);
         if (status) {