NFSv4: Don't ask for attributes when ACCESS is protected by a delegation

If we hold a delegation, then the results of the ACCESS call are protected
anyway.

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

1 files changed, 4 insertions, 2 deletions

diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index 79f1774b9d68..51264f5d9d2a 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -2102,7 +2102,8 @@ static void nfs4_xdr_enc_access(struct rpc_rqst *req, struct xdr_stream *xdr,
         encode_sequence(xdr, &args->seq_args, &hdr);
         encode_putfh(xdr, args->fh, &hdr);
         encode_access(xdr, args->access, &hdr);
-        encode_getfattr(xdr, args->bitmask, &hdr);
+        if (args->bitmask)
+                encode_getfattr(xdr, args->bitmask, &hdr);
         encode_nops(&hdr);
 }
 
@@ -6236,7 +6237,8 @@ static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
         status = decode_access(xdr, &res->supported, &res->access);
         if (status != 0)
                 goto out;
-        decode_getfattr(xdr, res->fattr, res->server);
+        if (res->fattr)
+                decode_getfattr(xdr, res->fattr, res->server);
 out:
         return status;
 }