From patchwork Tue Mar 14 12:57:19 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ming Lei X-Patchwork-Id: 13174366 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6F644C74A5B for ; Tue, 14 Mar 2023 13:04:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231953AbjCNNEQ (ORCPT ); Tue, 14 Mar 2023 09:04:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43366 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231954AbjCNND6 (ORCPT ); Tue, 14 Mar 2023 09:03:58 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B6D9A1630B for ; Tue, 14 Mar 2023 05:58:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1678798689; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=qZx3xS1ITkAS/DMGNSi3565ZmakI+lYblE9nWBc6PMw=; b=evvX4AZJSEmxhCmQJ0wCBUp17MfRHEPhHbBhfIuexKIE6Uu7gM7lBhQ2nzimoZn0k7x6L/ HHLkN6Vpne4Mh96Ovlr3fKc5xIix8kgqEkwhha3rp4Zy68i6Fs/bBpFMgNUhTvy6x7WfeZ gNoRpA0zosyrpM7VuyAtyEz/ofAqPkk= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-43-UYLmqG18PSaxDrblaYZ4sQ-1; Tue, 14 Mar 2023 08:58:04 -0400 X-MC-Unique: UYLmqG18PSaxDrblaYZ4sQ-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.rdu2.redhat.com [10.11.54.7]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 5F807800B23; Tue, 14 Mar 2023 12:58:03 +0000 (UTC) Received: from localhost (ovpn-8-27.pek2.redhat.com [10.72.8.27]) by smtp.corp.redhat.com (Postfix) with ESMTP id 91FF8140EBF4; Tue, 14 Mar 2023 12:58:02 +0000 (UTC) From: Ming Lei To: Jens Axboe , io-uring@vger.kernel.org, linux-block@vger.kernel.org Cc: Miklos Szeredi , ZiyangZhang , Xiaoguang Wang , Bernd Schubert , Pavel Begunkov , Ming Lei Subject: [PATCH V3 08/16] block: ublk_drv: add two helpers to clean up map/unmap request Date: Tue, 14 Mar 2023 20:57:19 +0800 Message-Id: <20230314125727.1731233-9-ming.lei@redhat.com> In-Reply-To: <20230314125727.1731233-1-ming.lei@redhat.com> References: <20230314125727.1731233-1-ming.lei@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.7 Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org Add two helpers for checking if map/unmap is needed, since we may have passthrough request which needs map or unmap in future, such as for supporting report zones. Meantime don't mark ublk_copy_user_pages as inline since this function is a bit fat now. Reviewed-by: Ziyang Zhang Signed-off-by: Ming Lei --- drivers/block/ublk_drv.c | 19 ++++++++++++++----- 1 file changed, 14 insertions(+), 5 deletions(-) diff --git a/drivers/block/ublk_drv.c b/drivers/block/ublk_drv.c index 5b13a58b424b..469e15057d7a 100644 --- a/drivers/block/ublk_drv.c +++ b/drivers/block/ublk_drv.c @@ -488,8 +488,7 @@ static inline unsigned ublk_copy_io_pages(struct ublk_io_iter *data, return done; } -static inline int ublk_copy_user_pages(struct ublk_map_data *data, - bool to_vm) +static int ublk_copy_user_pages(struct ublk_map_data *data, bool to_vm) { const unsigned int gup_flags = to_vm ? FOLL_WRITE : 0; const unsigned long start_vm = data->io->addr; @@ -525,6 +524,16 @@ static inline int ublk_copy_user_pages(struct ublk_map_data *data, return done; } +static inline bool ublk_need_map_req(const struct request *req) +{ + return ublk_rq_has_data(req) && req_op(req) == REQ_OP_WRITE; +} + +static inline bool ublk_need_unmap_req(const struct request *req) +{ + return ublk_rq_has_data(req) && req_op(req) == REQ_OP_READ; +} + static int ublk_map_io(const struct ublk_queue *ubq, const struct request *req, struct ublk_io *io) { @@ -535,7 +544,7 @@ static int ublk_map_io(const struct ublk_queue *ubq, const struct request *req, * context and the big benefit is that pinning pages in current * context is pretty fast, see ublk_pin_user_pages */ - if (ublk_rq_has_data(req) && req_op(req) == REQ_OP_WRITE) { + if (ublk_need_map_req(req)) { struct ublk_map_data data = { .ubq = ubq, .rq = req, @@ -556,7 +565,7 @@ static int ublk_unmap_io(const struct ublk_queue *ubq, { const unsigned int rq_bytes = blk_rq_bytes(req); - if (req_op(req) == REQ_OP_READ && ublk_rq_has_data(req)) { + if (ublk_need_unmap_req(req)) { struct ublk_map_data data = { .ubq = ubq, .rq = req, @@ -770,7 +779,7 @@ static inline void __ublk_rq_task_work(struct request *req) return; } - if (ublk_need_get_data(ubq) && (req_op(req) == REQ_OP_WRITE)) { + if (ublk_need_get_data(ubq) && ublk_need_map_req(req)) { /* * We have not handled UBLK_IO_NEED_GET_DATA command yet, * so immepdately pass UBLK_IO_RES_NEED_GET_DATA to ublksrv