From patchwork Tue Apr 18 15:52:18 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 9685687 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id BF404602C9 for ; Tue, 18 Apr 2017 15:53:34 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B0B8227D4D for ; Tue, 18 Apr 2017 15:53:34 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id A51E4283A6; Tue, 18 Apr 2017 15:53:34 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=2.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_HI,T_DKIM_INVALID autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 13BB027D4D for ; Tue, 18 Apr 2017 15:53:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757489AbdDRPxT (ORCPT ); Tue, 18 Apr 2017 11:53:19 -0400 Received: from bombadil.infradead.org ([65.50.211.133]:34431 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757454AbdDRPwt (ORCPT ); Tue, 18 Apr 2017 11:52:49 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=Sender:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:MIME-Version:Content-Type: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=w8Jgu2YvqtEbwp+8JEbvyAr/jYW9ZfSMFfIEeO/VYow=; b=QdKiiVdjmhGeTAp2jLrDqYMZL xJOPfQ8I7ZYyxudvCZsZKHczr9vB7YQNC8tgGwhtYPp/Wd7YTGy2nDhC94Cr2xYzuxBi8id1/bb48 9ZCEJGYHXewADkfejAKDA0fYw5XJARVNTTHpOeU1BqZCKcZelDochaAOTKTEdyjRdSfArQsybJT+J NHwHUrr0ikaq/vUlBkz/JFhwZpCBPmbkdqngXZrzHWQCz0wJRpsA4w0oTp2yrcw86n52QYzR3jQAX tOn/DcZ5XWUxLu5QwLbCMzFfybg/Kys7thRwL5+tsFLMpdCZgzVsznR6Umgnbf4VxIK++dUrDIkNO BLBEhoo+w==; Received: from hch by bombadil.infradead.org with local (Exim 4.87 #1 (Red Hat Linux)) id 1d0VQf-0001Zw-4q; Tue, 18 Apr 2017 15:52:33 +0000 From: Christoph Hellwig To: Jens Axboe Cc: Josef Bacik , James Smart , Konrad Rzeszutek Wilk , =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= , linux-scsi@vger.kernel.org, linux-nvme@lists.infradead.org, linux-block@vger.kernel.org, dm-devel@redhat.com, Christoph Hellwig Subject: nbd: don't use req->errors Date: Tue, 18 Apr 2017 08:52:18 -0700 Message-Id: <20170418155229.5977-13-hch@bombadil.infradead.org> X-Mailer: git-send-email 2.9.3 In-Reply-To: <20170418155229.5977-1-hch@bombadil.infradead.org> References: <20170418155229.5977-1-hch@bombadil.infradead.org> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Christoph Hellwig Add a nbd-specific field instead. Signed-off-by: Christoph Hellwig Reviewed-by: Josef Bacik --- drivers/block/nbd.c | 30 +++++++++++++++--------------- 1 file changed, 15 insertions(+), 15 deletions(-) diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c index b78f23ce2395..12ec881fd699 100644 --- a/drivers/block/nbd.c +++ b/drivers/block/nbd.c @@ -115,6 +115,7 @@ struct nbd_cmd { int index; int cookie; struct completion send_complete; + int status; }; #if IS_ENABLED(CONFIG_DEBUG_FS) @@ -244,16 +245,14 @@ static void nbd_size_set(struct nbd_device *nbd, loff_t blocksize, nbd_size_update(nbd); } -static void nbd_end_request(struct nbd_cmd *cmd) +static void nbd_complete_rq(struct request *req) { - struct nbd_device *nbd = cmd->nbd; - struct request *req = blk_mq_rq_from_pdu(cmd); - int error = req->errors ? -EIO : 0; + struct nbd_cmd *cmd = blk_mq_rq_to_pdu(req); - dev_dbg(nbd_to_dev(nbd), "request %p: %s\n", cmd, - error ? "failed" : "done"); + dev_dbg(nbd_to_dev(cmd->nbd), "request %p: %s\n", cmd, + cmd->status ? "failed" : "done"); - blk_mq_complete_request(req, error); + blk_mq_end_request(req, cmd->status); } /* @@ -286,7 +285,7 @@ static enum blk_eh_timer_return nbd_xmit_timeout(struct request *req, struct nbd_config *config; if (!refcount_inc_not_zero(&nbd->config_refs)) { - req->errors = -EIO; + cmd->status = -EIO; return BLK_EH_HANDLED; } @@ -331,7 +330,7 @@ static enum blk_eh_timer_return nbd_xmit_timeout(struct request *req, "Connection timed out\n"); } set_bit(NBD_TIMEDOUT, &config->runtime_flags); - req->errors = -EIO; + cmd->status = -EIO; sock_shutdown(nbd); nbd_config_put(nbd); @@ -574,7 +573,7 @@ static struct nbd_cmd *nbd_read_stat(struct nbd_device *nbd, int index) if (ntohl(reply.error)) { dev_err(disk_to_dev(nbd->disk), "Other side returned error (%d)\n", ntohl(reply.error)); - req->errors = -EIO; + cmd->status = -EIO; return cmd; } @@ -599,7 +598,7 @@ static struct nbd_cmd *nbd_read_stat(struct nbd_device *nbd, int index) */ if (nbd_disconnected(config) || config->num_connections <= 1) { - req->errors = -EIO; + cmd->status = -EIO; return cmd; } return ERR_PTR(-EIO); @@ -636,7 +635,7 @@ static void recv_work(struct work_struct *work) break; } - nbd_end_request(cmd); + blk_mq_complete_request(blk_mq_rq_from_pdu(cmd), 0); } atomic_dec(&config->recv_threads); wake_up(&config->recv_wq); @@ -651,8 +650,8 @@ static void nbd_clear_req(struct request *req, void *data, bool reserved) if (!blk_mq_request_started(req)) return; cmd = blk_mq_rq_to_pdu(req); - req->errors = -EIO; - nbd_end_request(cmd); + cmd->status = -EIO; + blk_mq_complete_request(req, 0); } static void nbd_clear_que(struct nbd_device *nbd) @@ -740,7 +739,7 @@ static int nbd_handle_cmd(struct nbd_cmd *cmd, int index) nbd_config_put(nbd); return -EINVAL; } - req->errors = 0; + cmd->status = 0; again: nsock = config->socks[index]; mutex_lock(&nsock->tx_lock); @@ -1408,6 +1407,7 @@ static int nbd_init_request(void *data, struct request *rq, static const struct blk_mq_ops nbd_mq_ops = { .queue_rq = nbd_queue_rq, + .complete = nbd_complete_rq, .init_request = nbd_init_request, .timeout = nbd_xmit_timeout, };