4.0-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Anna Schumaker <anna.schuma...@netapp.com>

commit 7c61f0d3897eeeff6f3294adb9f910ddefa8035a upstream.

d4b18c3e (pnfs: remove GETDEVICELIST implementation) removed the
GETDEVICELIST operation from the NFS client, but left a "hole" in the
nfs4_procedures array.  This caused /proc/self/mountstats to report an
operation named "51" where GETDEVICELIST used to be.  This patch adds a
stub to fix mountstats.

Signed-off-by: Anna Schumaker <anna.schuma...@netapp.com>
Fixes: d4b18c3e (pnfs: remove GETDEVICELIST implementation)
Signed-off-by: Trond Myklebust <trond.mykleb...@primarydata.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>

---
 fs/nfs/nfs4xdr.c |    6 ++++++
 1 file changed, 6 insertions(+)

--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -7365,6 +7365,11 @@ nfs4_stat_to_errno(int stat)
        .p_name   = #proc,                                      \
 }
 
+#define STUB(proc)             \
+[NFSPROC4_CLNT_##proc] = {     \
+       .p_name = #proc,        \
+}
+
 struct rpc_procinfo    nfs4_procedures[] = {
        PROC(READ,              enc_read,               dec_read),
        PROC(WRITE,             enc_write,              dec_write),
@@ -7417,6 +7422,7 @@ struct rpc_procinfo       nfs4_procedures[] =
        PROC(SECINFO_NO_NAME,   enc_secinfo_no_name,    dec_secinfo_no_name),
        PROC(TEST_STATEID,      enc_test_stateid,       dec_test_stateid),
        PROC(FREE_STATEID,      enc_free_stateid,       dec_free_stateid),
+       STUB(GETDEVICELIST),
        PROC(BIND_CONN_TO_SESSION,
                        enc_bind_conn_to_session, dec_bind_conn_to_session),
        PROC(DESTROY_CLIENTID,  enc_destroy_clientid,   dec_destroy_clientid),


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