From patchwork Sun May 11 20:52:06 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bruce Fields X-Patchwork-Id: 4152561 Return-Path: X-Original-To: patchwork-linux-nfs@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id E882A9F3AE for ; Sun, 11 May 2014 20:53:00 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id B6F192016C for ; Sun, 11 May 2014 20:52:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8736520179 for ; Sun, 11 May 2014 20:52:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757351AbaEKUwz (ORCPT ); Sun, 11 May 2014 16:52:55 -0400 Received: from fieldses.org ([174.143.236.118]:38516 "EHLO fieldses.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751663AbaEKUwy (ORCPT ); Sun, 11 May 2014 16:52:54 -0400 Received: from bfields by fieldses.org with local (Exim 4.76) (envelope-from ) id 1Wjajr-0005Aj-1y; Sun, 11 May 2014 16:52:51 -0400 From: "J. Bruce Fields" To: linux-nfs@vger.kernel.org Cc: Christoph Hellwig , "J. Bruce Fields" Subject: [PATCH 01/43] nfsd4: embed xdr_stream in nfsd4_compoundres Date: Sun, 11 May 2014 16:52:06 -0400 Message-Id: <1399841568-19716-2-git-send-email-bfields@redhat.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1399841568-19716-1-git-send-email-bfields@redhat.com> References: <1399841568-19716-1-git-send-email-bfields@redhat.com> Sender: linux-nfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org X-Spam-Status: No, score=-7.5 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: "J. Bruce Fields" This is a mechanical transformation with no change in behavior. Signed-off-by: J. Bruce Fields Reviewed-by: Christoph Hellwig --- fs/nfsd/nfs4proc.c | 12 +++++----- fs/nfsd/nfs4state.c | 8 +++---- fs/nfsd/nfs4xdr.c | 65 ++++++++++++++++++++++++++------------------------- fs/nfsd/xdr4.h | 4 +--- 4 files changed, 44 insertions(+), 45 deletions(-) diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c index 2c1ee70..46370f5 100644 --- a/fs/nfsd/nfs4proc.c +++ b/fs/nfsd/nfs4proc.c @@ -1268,13 +1268,13 @@ nfsd4_proc_compound(struct svc_rqst *rqstp, u32 plen = 0; __be32 status; - resp->xbuf = &rqstp->rq_res; - resp->p = rqstp->rq_res.head[0].iov_base + + resp->xdr.buf = &rqstp->rq_res; + resp->xdr.p = rqstp->rq_res.head[0].iov_base + rqstp->rq_res.head[0].iov_len; - resp->tagp = resp->p; + resp->tagp = resp->xdr.p; /* reserve space for: taglen, tag, and opcnt */ - resp->p += 2 + XDR_QUADLEN(args->taglen); - resp->end = rqstp->rq_res.head[0].iov_base + PAGE_SIZE; + resp->xdr.p += 2 + XDR_QUADLEN(args->taglen); + resp->xdr.end = rqstp->rq_res.head[0].iov_base + PAGE_SIZE; resp->taglen = args->taglen; resp->tag = args->tag; resp->opcnt = 0; @@ -1326,7 +1326,7 @@ nfsd4_proc_compound(struct svc_rqst *rqstp, * failed response to the next operation. If we don't * have enough room, fail with ERR_RESOURCE. */ - slack_bytes = (char *)resp->end - (char *)resp->p; + slack_bytes = (char *)resp->xdr.end - (char *)resp->xdr.p; if (slack_bytes < COMPOUND_SLACK_SPACE + COMPOUND_ERR_SLACK_SPACE) { BUG_ON(slack_bytes < COMPOUND_ERR_SLACK_SPACE); diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index fac2683..05cc3eb 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -1569,10 +1569,10 @@ nfsd4_store_cache_entry(struct nfsd4_compoundres *resp) slot->sl_datalen = 0; return; } - slot->sl_datalen = (char *)resp->p - (char *)resp->cstate.datap; + slot->sl_datalen = (char *)resp->xdr.p - (char *)resp->cstate.datap; base = (char *)resp->cstate.datap - - (char *)resp->xbuf->head[0].iov_base; - if (read_bytes_from_xdr_buf(resp->xbuf, base, slot->sl_data, + (char *)resp->xdr.buf->head[0].iov_base; + if (read_bytes_from_xdr_buf(resp->xdr.buf, base, slot->sl_data, slot->sl_datalen)) WARN("%s: sessions DRC could not cache compound\n", __func__); return; @@ -1626,7 +1626,7 @@ nfsd4_replay_cache_entry(struct nfsd4_compoundres *resp, memcpy(resp->cstate.datap, slot->sl_data, slot->sl_datalen); resp->opcnt = slot->sl_opcnt; - resp->p = resp->cstate.datap + XDR_QUADLEN(slot->sl_datalen); + resp->xdr.p = resp->cstate.datap + XDR_QUADLEN(slot->sl_datalen); status = slot->sl_status; return status; diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c index 18881f3..ef65ffc 100644 --- a/fs/nfsd/nfs4xdr.c +++ b/fs/nfsd/nfs4xdr.c @@ -1747,10 +1747,10 @@ static void write_cinfo(__be32 **p, struct nfsd4_change_info *c) } #define RESERVE_SPACE(nbytes) do { \ - p = resp->p; \ - BUG_ON(p + XDR_QUADLEN(nbytes) > resp->end); \ + p = resp->xdr.p; \ + BUG_ON(p + XDR_QUADLEN(nbytes) > resp->xdr.end); \ } while (0) -#define ADJUST_ARGS() resp->p = p +#define ADJUST_ARGS() resp->xdr.p = p /* Encode as an array of strings the string given with components * separated @sep, escaped with esc_enter and esc_exit. @@ -2751,9 +2751,9 @@ nfsd4_encode_getattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4 if (nfserr) return nfserr; - buflen = resp->end - resp->p - (COMPOUND_ERR_SLACK_SPACE >> 2); + buflen = resp->xdr.end - resp->xdr.p - (COMPOUND_ERR_SLACK_SPACE >> 2); nfserr = nfsd4_encode_fattr(fhp, fhp->fh_export, fhp->fh_dentry, - &resp->p, buflen, getattr->ga_bmval, + &resp->xdr.p, buflen, getattr->ga_bmval, resp->rqstp, 0); return nfserr; } @@ -2953,7 +2953,7 @@ nfsd4_encode_read(struct nfsd4_compoundres *resp, __be32 nfserr, if (nfserr) return nfserr; - if (resp->xbuf->page_len) + if (resp->xdr.buf->page_len) return nfserr_resource; RESERVE_SPACE(8); /* eof flag and byte count */ @@ -2991,18 +2991,18 @@ nfsd4_encode_read(struct nfsd4_compoundres *resp, __be32 nfserr, WRITE32(eof); WRITE32(maxcount); ADJUST_ARGS(); - resp->xbuf->head[0].iov_len = (char*)p - - (char*)resp->xbuf->head[0].iov_base; - resp->xbuf->page_len = maxcount; + resp->xdr.buf->head[0].iov_len = (char*)p + - (char*)resp->xdr.buf->head[0].iov_base; + resp->xdr.buf->page_len = maxcount; /* Use rest of head for padding and remaining ops: */ - resp->xbuf->tail[0].iov_base = p; - resp->xbuf->tail[0].iov_len = 0; + resp->xdr.buf->tail[0].iov_base = p; + resp->xdr.buf->tail[0].iov_len = 0; if (maxcount&3) { RESERVE_SPACE(4); WRITE32(0); - resp->xbuf->tail[0].iov_base += maxcount&3; - resp->xbuf->tail[0].iov_len = 4 - (maxcount&3); + resp->xdr.buf->tail[0].iov_base += maxcount&3; + resp->xdr.buf->tail[0].iov_len = 4 - (maxcount&3); ADJUST_ARGS(); } return 0; @@ -3017,7 +3017,7 @@ nfsd4_encode_readlink(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd if (nfserr) return nfserr; - if (resp->xbuf->page_len) + if (resp->xdr.buf->page_len) return nfserr_resource; if (!*resp->rqstp->rq_next_page) return nfserr_resource; @@ -3041,18 +3041,18 @@ nfsd4_encode_readlink(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd WRITE32(maxcount); ADJUST_ARGS(); - resp->xbuf->head[0].iov_len = (char*)p - - (char*)resp->xbuf->head[0].iov_base; - resp->xbuf->page_len = maxcount; + resp->xdr.buf->head[0].iov_len = (char*)p + - (char*)resp->xdr.buf->head[0].iov_base; + resp->xdr.buf->page_len = maxcount; /* Use rest of head for padding and remaining ops: */ - resp->xbuf->tail[0].iov_base = p; - resp->xbuf->tail[0].iov_len = 0; + resp->xdr.buf->tail[0].iov_base = p; + resp->xdr.buf->tail[0].iov_len = 0; if (maxcount&3) { RESERVE_SPACE(4); WRITE32(0); - resp->xbuf->tail[0].iov_base += maxcount&3; - resp->xbuf->tail[0].iov_len = 4 - (maxcount&3); + resp->xdr.buf->tail[0].iov_base += maxcount&3; + resp->xdr.buf->tail[0].iov_len = 4 - (maxcount&3); ADJUST_ARGS(); } return 0; @@ -3068,7 +3068,7 @@ nfsd4_encode_readdir(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4 if (nfserr) return nfserr; - if (resp->xbuf->page_len) + if (resp->xdr.buf->page_len) return nfserr_resource; if (!*resp->rqstp->rq_next_page) return nfserr_resource; @@ -3080,7 +3080,8 @@ nfsd4_encode_readdir(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4 WRITE32(0); WRITE32(0); ADJUST_ARGS(); - resp->xbuf->head[0].iov_len = ((char*)resp->p) - (char*)resp->xbuf->head[0].iov_base; + resp->xdr.buf->head[0].iov_len = ((char*)resp->xdr.p) + - (char*)resp->xdr.buf->head[0].iov_base; tailbase = p; maxcount = PAGE_SIZE; @@ -3121,14 +3122,14 @@ nfsd4_encode_readdir(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4 p = readdir->buffer; *p++ = 0; /* no more entries */ *p++ = htonl(readdir->common.err == nfserr_eof); - resp->xbuf->page_len = ((char*)p) - + resp->xdr.buf->page_len = ((char*)p) - (char*)page_address(*(resp->rqstp->rq_next_page-1)); /* Use rest of head for padding and remaining ops: */ - resp->xbuf->tail[0].iov_base = tailbase; - resp->xbuf->tail[0].iov_len = 0; - resp->p = resp->xbuf->tail[0].iov_base; - resp->end = resp->p + (PAGE_SIZE - resp->xbuf->head[0].iov_len)/4; + resp->xdr.buf->tail[0].iov_base = tailbase; + resp->xdr.buf->tail[0].iov_len = 0; + resp->xdr.p = resp->xdr.buf->tail[0].iov_base; + resp->xdr.end = resp->xdr.p + (PAGE_SIZE - resp->xdr.buf->head[0].iov_len)/4; return 0; err_no_verf: @@ -3587,10 +3588,10 @@ __be32 nfsd4_check_resp_size(struct nfsd4_compoundres *resp, u32 pad) session = resp->cstate.session; if (xb->page_len == 0) { - length = (char *)resp->p - (char *)xb->head[0].iov_base + pad; + 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->p - (char *)xb->tail[0].iov_base; + tlen = (char *)resp->xdr.p - (char *)xb->tail[0].iov_base; length = xb->head[0].iov_len + xb->page_len + tlen + pad; } @@ -3629,7 +3630,7 @@ nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op) op->status = nfsd4_check_resp_size(resp, 0); if (so) { so->so_replay.rp_status = op->status; - so->so_replay.rp_buflen = (char *)resp->p - (char *)(statp+1); + so->so_replay.rp_buflen = (char *)resp->xdr.p - (char *)(statp+1); memcpy(so->so_replay.rp_buf, statp+1, so->so_replay.rp_buflen); } status: @@ -3731,7 +3732,7 @@ nfs4svc_encode_compoundres(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compo iov = &rqstp->rq_res.tail[0]; else iov = &rqstp->rq_res.head[0]; - iov->iov_len = ((char*)resp->p) - (char*)iov->iov_base; + iov->iov_len = ((char*)resp->xdr.p) - (char*)iov->iov_base; BUG_ON(iov->iov_len > PAGE_SIZE); if (nfsd4_has_session(cs)) { struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); diff --git a/fs/nfsd/xdr4.h b/fs/nfsd/xdr4.h index 5ea7df3..6884d70 100644 --- a/fs/nfsd/xdr4.h +++ b/fs/nfsd/xdr4.h @@ -506,9 +506,7 @@ struct nfsd4_compoundargs { struct nfsd4_compoundres { /* scratch variables for XDR encode */ - __be32 * p; - __be32 * end; - struct xdr_buf * xbuf; + struct xdr_stream xdr; struct svc_rqst * rqstp; u32 taglen;