nfsd4: fix nfs4err_resource in 4.1 case

encode_getattr, for example, can return nfserr_resource to indicate it
ran out of buffer space.  That's not a legal error in the 4.1 case.  And
in the 4.1 case, if we ran out of buffer space, we should have exceeded
a session limit too.

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

1 files changed, 8 insertions, 0 deletions

diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index 94b7f19d2718..4c247c1ea5c1 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -3625,6 +3625,14 @@ nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op)
         /* nfsd4_check_resp_size guarantees enough room for error status */
         if (!op->status)
                 op->status = nfsd4_check_resp_size(resp, 0);
+        if (op->status == nfserr_resource && nfsd4_has_session(&resp->cstate)) {
+                struct nfsd4_slot *slot = resp->cstate.slot;
+
+                if (slot->sl_flags & NFSD4_SLOT_CACHETHIS)
+                        op->status = nfserr_rep_too_big_to_cache;
+                else
+                        op->status = nfserr_rep_too_big;
+        }
         if (so) {
                 so->so_replay.rp_status = op->status;
                 so->so_replay.rp_buflen = (char *)resp->p - (char *)(statp+1);