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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>
This commit is contained in:
J. Bruce Fields 2014-03-08 16:42:05 -05:00
parent 4e21ac4b6f
commit 67492c9903
1 changed files with 3 additions and 15 deletions
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18
fs/nfsd/nfs4xdr.c
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@ -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;