From patchwork Mon Dec 4 14:57:22 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chuck Lever X-Patchwork-Id: 13478605 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4379A28DB6; Mon, 4 Dec 2023 14:57:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="RMr7iLNm" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 73BF2C433C8; Mon, 4 Dec 2023 14:57:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1701701843; bh=fPwU/ey4ZZiR7AlTk8tV5eZLWybtFxR0P0I2YfbZ7XA=; h=Subject:From:To:Cc:Date:In-Reply-To:References:From; b=RMr7iLNmbUi7HSf1s92+8k+DRzfyxafCi22W69zlPYcTl2/PVdWJ9QHojS3319evT w6auOLEo7Fz0BCLxvsxsDZODu7kv/JDS8JAjXgJ4I4dTP5Uljs0C9uyQJAqIebi71+ t1+GHtFiQqRUyhB0gUl8neS+hDNzYSISImJjTdloSZsaCbfclxf2IGyO1+8CLsEHT9 UnBsT0fyZd72clDQxukNLPZjcpHYbwt6cegnhkEMqfhfTYpWzIuhzYC2YQzqM3JFWd 13c1E0rTGSbx70Uszt59sAZQKJw5zAyA+G3jEtqh1c4gyxRDuuYpwRKudvskAAoCzG RfST+FDYIWM6Q== Subject: [PATCH v1 10/21] svcrdma: Move svc_rdma_read_info::ri_pageno to struct svc_rdma_recv_ctxt From: Chuck Lever To: linux-nfs@vger.kernel.org, linux-rdma@vger.kernel.org Cc: tom@talpey.com Date: Mon, 04 Dec 2023 09:57:22 -0500 Message-ID: <170170184250.54779.8437537335627107281.stgit@bazille.1015granger.net> In-Reply-To: <170170144201.54779.9877683240030806819.stgit@bazille.1015granger.net> References: <170170144201.54779.9877683240030806819.stgit@bazille.1015granger.net> User-Agent: StGit/1.5 Precedence: bulk X-Mailing-List: linux-nfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Chuck Lever Further clean up: move the page index field into svc_rdma_recv_ctxt. Signed-off-by: Chuck Lever --- include/linux/sunrpc/svc_rdma.h | 1 + net/sunrpc/xprtrdma/svc_rdma_rw.c | 21 +++++++++------------ 2 files changed, 10 insertions(+), 12 deletions(-) diff --git a/include/linux/sunrpc/svc_rdma.h b/include/linux/sunrpc/svc_rdma.h index 6c7501ae4e29..0ea66f73bec2 100644 --- a/include/linux/sunrpc/svc_rdma.h +++ b/include/linux/sunrpc/svc_rdma.h @@ -157,6 +157,7 @@ struct svc_rdma_recv_ctxt { __be32 rc_msgtype; /* State for pulling a Read chunk */ + unsigned int rc_curpage; unsigned int rc_readbytes; struct svc_rdma_chunk_ctxt rc_cc; diff --git a/net/sunrpc/xprtrdma/svc_rdma_rw.c b/net/sunrpc/xprtrdma/svc_rdma_rw.c index a27b8f338ae5..487acb192558 100644 --- a/net/sunrpc/xprtrdma/svc_rdma_rw.c +++ b/net/sunrpc/xprtrdma/svc_rdma_rw.c @@ -292,7 +292,6 @@ static void svc_rdma_write_done(struct ib_cq *cq, struct ib_wc *wc) struct svc_rdma_read_info { struct svc_rqst *ri_rqst; struct svc_rdma_recv_ctxt *ri_readctxt; - unsigned int ri_pageno; unsigned int ri_pageoff; }; @@ -720,20 +719,18 @@ static int svc_rdma_build_read_segment(struct svcxprt_rdma *rdma, if (!info->ri_pageoff) head->rc_page_count++; - sg_set_page(sg, rqstp->rq_pages[info->ri_pageno], + sg_set_page(sg, rqstp->rq_pages[head->rc_curpage], seg_len, info->ri_pageoff); sg = sg_next(sg); info->ri_pageoff += seg_len; if (info->ri_pageoff == PAGE_SIZE) { - info->ri_pageno++; + head->rc_curpage++; info->ri_pageoff = 0; } len -= seg_len; - /* Safety check */ - if (len && - &rqstp->rq_pages[info->ri_pageno + 1] > rqstp->rq_page_end) + if (len && ((head->rc_curpage + 1) > ARRAY_SIZE(rqstp->rq_pages))) goto out_overrun; } @@ -748,7 +745,7 @@ static int svc_rdma_build_read_segment(struct svcxprt_rdma *rdma, return 0; out_overrun: - trace_svcrdma_page_overrun_err(&cc->cc_cid, info->ri_pageno); + trace_svcrdma_page_overrun_err(&cc->cc_cid, head->rc_curpage); return -EINVAL; } @@ -790,7 +787,7 @@ static int svc_rdma_build_read_chunk(struct svcxprt_rdma *rdma, * * Take a page at a time from rqstp->rq_pages and copy the inline * content from the Receive buffer into that page. Update - * info->ri_pageno and info->ri_pageoff so that the next RDMA Read + * head->rc_curpage and info->ri_pageoff so that the next RDMA Read * result will land contiguously with the copied content. * * Return values: @@ -816,13 +813,13 @@ static int svc_rdma_copy_inline_range(struct svc_rdma_read_info *info, if (!info->ri_pageoff) head->rc_page_count++; - dst = page_address(rqstp->rq_pages[info->ri_pageno]); - memcpy(dst + info->ri_pageno, src + offset, page_len); + dst = page_address(rqstp->rq_pages[head->rc_curpage]); + memcpy(dst + head->rc_curpage, src + offset, page_len); head->rc_readbytes += page_len; info->ri_pageoff += page_len; if (info->ri_pageoff == PAGE_SIZE) { - info->ri_pageno++; + head->rc_curpage++; info->ri_pageoff = 0; } remaining -= page_len; @@ -1137,10 +1134,10 @@ int svc_rdma_process_read_list(struct svcxprt_rdma *rdma, return -ENOMEM; info->ri_rqst = rqstp; info->ri_readctxt = head; - info->ri_pageno = 0; info->ri_pageoff = 0; svc_rdma_cc_init(rdma, cc); cc->cc_cqe.done = svc_rdma_wc_read_done; + head->rc_curpage = 0; head->rc_readbytes = 0; if (pcl_is_empty(&head->rc_call_pcl)) {