Revert "nfsd4: fix nfs4err_resource in 4.1 case"

Since we're still limiting attributes to a page, the result here is that
a large getattr result will return NFS4ERR_REP_TOO_BIG/TOO_BIG_TO_CACHE
instead of NFS4ERR_RESOURCE.

Both error returns are wrong, and the real bug here is the arbitrary
limit on getattr results, fixed by as-yet out-of-tree patches.  But at a
minimum we can make life easier for clients by sticking to one broken
behavior in released kernels instead of two....

Trond says:

	one immediate consequence of this patch will be that NFSv4.1
	clients will now report EIO instead of EREMOTEIO if they hit the
	problem. That may make debugging a little less obvious.

	Another consequence will be that if we ever do try to add client
	side handling of NFS4ERR_REP_TOO_BIG, then we now have to deal
	with the “handle existing buggy server” syndrome.

Reported-by: Trond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index 2723c1b..18881f3 100644 (file)
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -3627,14 +3627,6 @@ 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);