nfsd4: nfsd4_check_resp_size needn't recalculate length

We're keeping the length updated as we go now, so there's no need for
the extra calculation here.

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

1 files changed, 3 insertions, 15 deletions

diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index 8728715cd6e8..89c65a3e09e4 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -3752,32 +3752,20 @@ static nfsd4_enc nfsd4_enc_ops[] = {
  */
 __be32 nfsd4_check_resp_size(struct nfsd4_compoundres *resp, u32 pad)
 {
-        struct xdr_buf *xb = &resp->rqstp->rq_res;
+        struct xdr_buf *buf = &resp->rqstp->rq_res;
         struct nfsd4_session *session = NULL;
         struct nfsd4_slot *slot = resp->cstate.slot;
-        u32 length, tlen = 0;
 
         if (!nfsd4_has_session(&resp->cstate))
                 return 0;
 
         session = resp->cstate.session;
 
-        if (xb->page_len == 0) {
-                length = (char *)resp->xdr.p - (char *)xb->head[0].iov_base + pad;
-        } else {
-                if (xb->tail[0].iov_base && xb->tail[0].iov_len > 0)
-                        tlen = (char *)resp->xdr.p - (char *)xb->tail[0].iov_base;
-
-                length = xb->head[0].iov_len + xb->page_len + tlen + pad;
-        }
-        dprintk("%s length %u, xb->page_len %u tlen %u pad %u\n", __func__,
-                length, xb->page_len, tlen, pad);
-
-        if (length > session->se_fchannel.maxresp_sz)
+        if (buf->len + pad > session->se_fchannel.maxresp_sz)
                 return nfserr_rep_too_big;
 
         if ((slot->sl_flags & NFSD4_SLOT_CACHETHIS) &&
-            length > session->se_fchannel.maxresp_cached)
+            buf->len + pad > session->se_fchannel.maxresp_cached)
                 return nfserr_rep_too_big_to_cache;
 
         return 0;