From patchwork Mon Dec 4 14:58:07 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chuck Lever X-Patchwork-Id: 13478651 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 E141A28DD7; Mon, 4 Dec 2023 14:58:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="fHlaSo4b" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 77EEEC433C8; Mon, 4 Dec 2023 14:58:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1701701888; bh=946CeXARQLqXfsTMLhO5FktvMW01Gz0FAfGnvmr/SZ0=; h=Subject:From:To:Cc:Date:In-Reply-To:References:From; b=fHlaSo4bxsE1K1kOkiCjrS5r1IciVaQ5WrDFr2iEgp6lZtqFt79Om/KaBBxszZpDJ 3rKFNUw3ZbXAit54NqQQqg5XDh2DEW+hXoFCNb92XcCBAX00twKn2Tr5pHcXKMlg+B 89fAkaV4Etrpb/Oiw4MjuzJrwubbkgaDBX5ccOVveJFlnO4QBSHdpvIuC6fXorF4H+ XszwEvdLn4zMU0vTJpcavZUhM4Wtk4vzhZ3LKCqvAxbujDgr99AtqZWcHTTAq7er4k UWTPzZgJsowy3yIsOLO3ToNKP7ljG179liOyTXFxdx+dh0fwNN6fxwdKHBYm+Xh9xf nNPXdX24rNR9Q== Subject: [PATCH v1 17/21] svcrdma: Update synopsis of svc_rdma_read_multiple_chunks() From: Chuck Lever To: linux-nfs@vger.kernel.org, linux-rdma@vger.kernel.org Cc: tom@talpey.com Date: Mon, 04 Dec 2023 09:58:07 -0500 Message-ID: <170170188752.54779.18431371210563356783.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-rdma@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Chuck Lever Since the RDMA Read I/O state is now contained in the recv_ctxt, svc_rdma_read_multiple_chunks() can use that recv_ctxt to derive the read_info rather than the other way around. This removes another usage of the ri_readctxt field, enabling its removal in a subsequent patch. Signed-off-by: Chuck Lever --- net/sunrpc/xprtrdma/svc_rdma_rw.c | 19 +++++++++---------- 1 file changed, 9 insertions(+), 10 deletions(-) diff --git a/net/sunrpc/xprtrdma/svc_rdma_rw.c b/net/sunrpc/xprtrdma/svc_rdma_rw.c index ec546fe094e8..56a8e602706a 100644 --- a/net/sunrpc/xprtrdma/svc_rdma_rw.c +++ b/net/sunrpc/xprtrdma/svc_rdma_rw.c @@ -828,8 +828,8 @@ static int svc_rdma_copy_inline_range(struct svc_rqst *rqstp, /** * svc_rdma_read_multiple_chunks - Construct RDMA Reads to pull data item Read chunks - * @rdma: controlling transport - * @info: context for RDMA Reads + * @rqstp: RPC transaction context + * @head: context for ongoing I/O * * The chunk data lands in rqstp->rq_arg as a series of contiguous pages, * like an incoming TCP call. @@ -841,12 +841,11 @@ static int svc_rdma_copy_inline_range(struct svc_rqst *rqstp, * %-ENOTCONN: posting failed (connection is lost), * %-EIO: rdma_rw initialization failed (DMA mapping, etc). */ -static noinline int svc_rdma_read_multiple_chunks(struct svcxprt_rdma *rdma, - struct svc_rdma_read_info *info) +static noinline int +svc_rdma_read_multiple_chunks(struct svc_rqst *rqstp, + struct svc_rdma_recv_ctxt *head) { - struct svc_rdma_recv_ctxt *head = info->ri_readctxt; const struct svc_rdma_pcl *pcl = &head->rc_read_pcl; - struct svc_rqst *rqstp = info->ri_rqst; struct xdr_buf *buf = &rqstp->rq_arg; struct svc_rdma_chunk *chunk, *next; unsigned int start, length; @@ -860,7 +859,7 @@ static noinline int svc_rdma_read_multiple_chunks(struct svcxprt_rdma *rdma, return ret; pcl_for_each_chunk(chunk, pcl) { - ret = svc_rdma_build_read_chunk(info->ri_rqst, head, chunk); + ret = svc_rdma_build_read_chunk(rqstp, head, chunk); if (ret < 0) return ret; @@ -884,9 +883,9 @@ static noinline int svc_rdma_read_multiple_chunks(struct svcxprt_rdma *rdma, buf->len += head->rc_readbytes; buf->buflen += head->rc_readbytes; - buf->head[0].iov_base = page_address(info->ri_rqst->rq_pages[0]); + buf->head[0].iov_base = page_address(rqstp->rq_pages[0]); buf->head[0].iov_len = min_t(size_t, PAGE_SIZE, head->rc_readbytes); - buf->pages = &info->ri_rqst->rq_pages[1]; + buf->pages = &rqstp->rq_pages[1]; buf->page_len = head->rc_readbytes - buf->head[0].iov_len; return 0; } @@ -1143,7 +1142,7 @@ int svc_rdma_process_read_list(struct svcxprt_rdma *rdma, if (head->rc_read_pcl.cl_count == 1) ret = svc_rdma_read_data_item(rqstp, head); else - ret = svc_rdma_read_multiple_chunks(rdma, info); + ret = svc_rdma_read_multiple_chunks(rqstp, head); } else ret = svc_rdma_read_special(rdma, info); if (ret < 0)