NFSv4: Fix the underestimation of delegation XDR space reservation

Account for the "space_limit" field in struct open_write_delegation4.

Fixes: 2cebf82883f4 ("NFSv4: Fix the underestimate of NFSv4 open request size")
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Reviewed-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index d10cc2a62dff..26808fbaacb0 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -169,8 +169,10 @@ static int nfs4_stat_to_errno(int);
                                 open_owner_id_maxsz + \
                                 encode_opentype_maxsz + \
                                 encode_claim_null_maxsz)
+#define decode_space_limit_maxsz        (3)
 #define decode_ace_maxsz        (3 + nfs4_owner_maxsz)
 #define decode_delegation_maxsz (1 + decode_stateid_maxsz + 1 + \
+                                decode_space_limit_maxsz + \
                                 decode_ace_maxsz)
 #define decode_change_info_maxsz        (5)
 #define decode_open_maxsz       (op_decode_hdr_maxsz + \