From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id AA11EC433E0 for ; Mon, 1 Mar 2021 15:18:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 77CE964E40 for ; Mon, 1 Mar 2021 15:18:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235917AbhCAPSo (ORCPT ); Mon, 1 Mar 2021 10:18:44 -0500 Received: from mail.kernel.org ([198.145.29.99]:41146 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237030AbhCAPSm (ORCPT ); Mon, 1 Mar 2021 10:18:42 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id E6C9764E04 for ; Mon, 1 Mar 2021 15:18:01 +0000 (UTC) Subject: [PATCH v1 27/42] NFSD: Update the NFSv2 READ result encoder to use struct xdr_stream From: Chuck Lever To: linux-nfs@vger.kernel.org Date: Mon, 01 Mar 2021 10:18:01 -0500 Message-ID: <161461188121.8508.15688551888928802157.stgit@klimt.1015granger.net> In-Reply-To: <161461145466.8508.13379815439337754427.stgit@klimt.1015granger.net> References: <161461145466.8508.13379815439337754427.stgit@klimt.1015granger.net> User-Agent: StGit/1.0-5-g755c MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org Signed-off-by: Chuck Lever --- fs/nfsd/nfsproc.c | 1 + fs/nfsd/nfsxdr.c | 32 +++++++++++++++----------------- fs/nfsd/xdr.h | 1 + 3 files changed, 17 insertions(+), 17 deletions(-) diff --git a/fs/nfsd/nfsproc.c b/fs/nfsd/nfsproc.c index f55080482997..2088bb0887ba 100644 --- a/fs/nfsd/nfsproc.c +++ b/fs/nfsd/nfsproc.c @@ -185,6 +185,7 @@ nfsd_proc_read(struct svc_rqst *rqstp) v = 0; len = argp->count; + resp->pages = rqstp->rq_next_page; while (len > 0) { struct page *page = *(rqstp->rq_next_page++); diff --git a/fs/nfsd/nfsxdr.c b/fs/nfsd/nfsxdr.c index 74d9d11949c6..d6d7d07dbb1b 100644 --- a/fs/nfsd/nfsxdr.c +++ b/fs/nfsd/nfsxdr.c @@ -549,27 +549,25 @@ nfssvc_encode_readlinkres(struct svc_rqst *rqstp, __be32 *p) int nfssvc_encode_readres(struct svc_rqst *rqstp, __be32 *p) { + struct xdr_stream *xdr = &rqstp->rq_res_stream; struct nfsd_readres *resp = rqstp->rq_resp; struct kvec *head = rqstp->rq_res.head; - *p++ = resp->status; - if (resp->status != nfs_ok) - return xdr_ressize_check(rqstp, p); - - p = encode_fattr(rqstp, p, &resp->fh, &resp->stat); - *p++ = htonl(resp->count); - xdr_ressize_check(rqstp, p); - - /* now update rqstp->rq_res to reflect data as well */ - rqstp->rq_res.page_len = resp->count; - if (resp->count & 3) { - /* need to pad the tail */ - rqstp->rq_res.tail[0].iov_base = p; - *p = 0; - rqstp->rq_res.tail[0].iov_len = 4 - (resp->count&3); - } - if (svc_encode_result_payload(rqstp, head->iov_len, resp->count)) + if (!svcxdr_encode_stat(xdr, resp->status)) return 0; + switch (resp->status) { + case nfs_ok: + if (!svcxdr_encode_fattr(rqstp, xdr, &resp->fh, &resp->stat)) + return 0; + if (xdr_stream_encode_u32(xdr, resp->count) < 0) + return 0; + xdr_write_pages(xdr, resp->pages, rqstp->rq_res.page_base, + resp->count); + if (svc_encode_result_payload(rqstp, head->iov_len, resp->count) < 0) + return 0; + break; + } + return 1; } diff --git a/fs/nfsd/xdr.h b/fs/nfsd/xdr.h index b868565c471f..277b74c511ce 100644 --- a/fs/nfsd/xdr.h +++ b/fs/nfsd/xdr.h @@ -102,6 +102,7 @@ struct nfsd_readres { struct svc_fh fh; unsigned long count; struct kstat stat; + struct page **pages; }; struct nfsd_readdirres {