From patchwork Thu Oct 27 18:01:39 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?UTF-8?q?Javier=20Gonz=C3=A1lez?= X-Patchwork-Id: 9400093 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 23E1D600BA for ; Thu, 27 Oct 2016 18:02:37 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 19E492A1F1 for ; Thu, 27 Oct 2016 18:02:37 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 0EF952A1FE; Thu, 27 Oct 2016 18:02:37 +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 B4CFD2A1F1 for ; Thu, 27 Oct 2016 18:02:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S941894AbcJ0SB7 (ORCPT ); Thu, 27 Oct 2016 14:01:59 -0400 Received: from mail-lf0-f46.google.com ([209.85.215.46]:35902 "EHLO mail-lf0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S942052AbcJ0SB6 (ORCPT ); Thu, 27 Oct 2016 14:01:58 -0400 Received: by mail-lf0-f46.google.com with SMTP id b75so38487430lfg.3 for ; Thu, 27 Oct 2016 11:01:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=lightnvm-io.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=1T8UoeNDHt72rIeva06jpyzfvM5GVQtTLLFGgcIGT5s=; b=RwO4oAY4OpptwQsEWjcIlbSsbOQ6hUcPyuAk55et+ayI6EI914k6nEKW+HZCE/rpCl w54O5kaoNO3VmzFSsPS7Vq7B83QchkwXugK/eTfgummk8gWKHmXSoqiF1J+StevTtPr8 ifjbUuorPF8r1KYwhIJukgnWob9D1wmE9UfqLJL7lAO/0AI2yvis+4Kssste8gXxSHVR vVv85Mf8aCfqUPbbneZwujKOUJ0DUHlaJcbKvxvwiUECHgFDshQPSftfx60uaAWzBl7O 17y4JSIJHDKE/1Ay1Wb79izU3KPhQ/s3+2EqLCTqdY9qXqRxyKkUueMcluYDooaI1VwO JkuA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=1T8UoeNDHt72rIeva06jpyzfvM5GVQtTLLFGgcIGT5s=; b=Y/0rofurXV4gj3BalY0LRU8ru7ZhKwat0ufufQaoCnbHAqRDJo74X99yvsPP8Pq0VX x4CJMNccZylNKfRoroFPDukG9v2U5ULz9ZDxj/jxHTQy+4PtrqOW/bExk66m9f/JPxOj fw+xDim2+UP0TduL1vrCYLjc9gsioZQmHa2Xm0c9VIdAhVCBdaOu0h92I8TPf2ZsEJV4 fSDYU7X9BUC2+zQhanuKkbb+mC0xld5K2PbX8QwWv/DODM4WE9c4EJEgzLOy5nwJN3t2 KxwQdo5Efze/2TstQ38ykEgJkCtsx8kNm7ZfoFTYGoSZyFhX1GPCjt5GafqnZc50GKSz QKfA== X-Gm-Message-State: ABUngvc8mdbkF9g+Zh8xBpIXza/x8/duQ3hndS2zPUWHHMs01J6tpM8zHsYQZNoCLsqKsw== X-Received: by 10.25.139.86 with SMTP id n83mr7451459lfd.72.1477591316315; Thu, 27 Oct 2016 11:01:56 -0700 (PDT) Received: from localhost.localdomain (x1-6-48-83-c7-90-44-8a.cpe.webspeed.dk. [80.163.36.44]) by smtp.gmail.com with ESMTPSA id 198sm1452333ljf.17.2016.10.27.11.01.55 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Thu, 27 Oct 2016 11:01:55 -0700 (PDT) From: "=?UTF-8?q?Javier=20Gonz=C3=A1lez?=" X-Google-Original-From: =?UTF-8?q?Javier=20Gonz=C3=A1lez?= To: mb@lightnvm.io Cc: linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, =?UTF-8?q?Javier=20Gonz=C3=A1lez?= Subject: [PATCH 7/7] lightnvm: rrpc: split bios of size > 256kb Date: Thu, 27 Oct 2016 20:01:39 +0200 Message-Id: <1477591299-26504-8-git-send-email-javier@cnexlabs.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1477591299-26504-1-git-send-email-javier@cnexlabs.com> References: <1477591299-26504-1-git-send-email-javier@cnexlabs.com> MIME-Version: 1.0 Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP rrpc cannot handle bios of size > 256kb due to NVMe using a 64 bit bitmap to signal I/O completion. If a larger bio comes, split it explicitly. Signed-off-by: Javier González --- drivers/lightnvm/rrpc.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/lightnvm/rrpc.c b/drivers/lightnvm/rrpc.c index 8deef2e..0b8251f 100644 --- a/drivers/lightnvm/rrpc.c +++ b/drivers/lightnvm/rrpc.c @@ -984,6 +984,12 @@ static blk_qc_t rrpc_make_rq(struct request_queue *q, struct bio *bio) struct nvm_rq *rqd; int err; + /* + * Multipage is supported up until 256kb due to NVME's 64 bit completion + * bitmap. + */ + blk_queue_split(q, &bio, q->bio_split); + if (bio_op(bio) == REQ_OP_DISCARD) { rrpc_discard(rrpc, bio); return BLK_QC_T_NONE;