From patchwork Tue Apr 5 11:56:49 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ming Lei X-Patchwork-Id: 8750161 Return-Path: X-Original-To: patchwork-linux-block@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id CB2B0C0553 for ; Tue, 5 Apr 2016 11:59:48 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id F3C7D203A1 for ; Tue, 5 Apr 2016 11:59:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 27A312034F for ; Tue, 5 Apr 2016 11:59:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754796AbcDEL7P (ORCPT ); Tue, 5 Apr 2016 07:59:15 -0400 Received: from mail-pa0-f65.google.com ([209.85.220.65]:34737 "EHLO mail-pa0-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932170AbcDEL7M (ORCPT ); Tue, 5 Apr 2016 07:59:12 -0400 Received: by mail-pa0-f65.google.com with SMTP id hb4so1123097pac.1; Tue, 05 Apr 2016 04:59:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=lSp+xw4JhGfMflKhiPogCv2v9cIqBJEEUsc4QF6+ftU=; b=Xcg+rrdt8h+6pWETjHTtTMImYBLyxCLNmOidmRDDmUtso22pPJulSjqGN6wvYrk7+2 OowELa1IwDL9EYtyFESGuVVgszoyPrqUalq9bg2a7FxhP2cN45pjAuk3RbMnwYEeKA3y rYORM2jhRBC1oSJ23AYk64JlBvghmWpl506lwqUcqFjvIzNtoOV/5hlCDZZ4y3dWREwW GsxC6/kOxuL8T0jrPj97d40hKHfEaLOKGzfRUoXyd5qjz1BaOwMV7tka8P87cQL3w9Uq qogDkBHDHE0RJQl4F2wQaTXgc7C2Oqgh1uIg5RlkOmFt3TvNYNUkABSyDRRDpjK3R1q5 Ab2A== 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; bh=lSp+xw4JhGfMflKhiPogCv2v9cIqBJEEUsc4QF6+ftU=; b=ZFohKTrRWepjH1HDBsbMF4Oi1j3DUJsOOft1SLT0359/yqQ7OZoBISN0ukS1vggWjx a8Q9xUQD3tlfPPKobvc3UI9jZSKIpolG84XSJZSB0VZAjv4fcLM5qxAn7YhRM4RR+8Wf KxqZy9y84qiaKJ6ro3abTIyUXuaTtZHhIwlrxKvAxHFFwvSCqjLPRyuifXC6kX8bp36u q3OnHnnk+EtyafmN8ehf7UuAeGOJYBdNQXwMioqXbkbOkLRFfYYlr9I3Qp2hswMy7L2t S/wJvmtMwVmrQmwvdo4r7bJTudiqHnNeLGwmpgtRnAQ/zHreRkuDMzW0nkZzv4Ni4xTn O21g== X-Gm-Message-State: AD7BkJJvrq3XtuOJUKRdoYNb4+ApBYVMwqYx/UeI5C4OA/LQQ1P39FRlmfzMH59+tRzbMQ== X-Received: by 10.66.199.66 with SMTP id ji2mr61735190pac.34.1459857551758; Tue, 05 Apr 2016 04:59:11 -0700 (PDT) Received: from localhost (56.34.213.162.lcy-01.canonistack.canonical.com. [162.213.34.56]) by smtp.gmail.com with ESMTPSA id ez6sm7446896pab.12.2016.04.05.04.59.09 (version=TLS1_2 cipher=AES128-SHA bits=128/128); Tue, 05 Apr 2016 04:59:11 -0700 (PDT) From: Ming Lei To: Jens Axboe , linux-kernel@vger.kernel.org Cc: linux-block@vger.kernel.org, Christoph Hellwig , Boaz Harrosh , Ming Lei , Al Viro , Jarod Wilson , Tejun Heo , Miklos Szeredi , NeilBrown Subject: [PATCH 04/27] block: loop: use bio_get_base_vec() to retrive bvec table Date: Tue, 5 Apr 2016 19:56:49 +0800 Message-Id: <1459857443-20611-5-git-send-email-tom.leiming@gmail.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1459857443-20611-1-git-send-email-tom.leiming@gmail.com> References: <1459857443-20611-1-git-send-email-tom.leiming@gmail.com> Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org X-Spam-Status: No, score=-7.8 required=5.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, FREEMAIL_FROM, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, T_DKIM_INVALID, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Signed-off-by: Ming Lei --- drivers/block/loop.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/block/loop.c b/drivers/block/loop.c index 423f4ca..2a94d3bb 100644 --- a/drivers/block/loop.c +++ b/drivers/block/loop.c @@ -477,7 +477,7 @@ static int lo_rw_aio(struct loop_device *lo, struct loop_cmd *cmd, loff_t pos, bool rw) { struct iov_iter iter; - struct bio_vec *bvec; + const struct bio_vec *bvec; struct bio *bio = cmd->rq->bio; struct file *file = lo->lo_backing_file; int ret; @@ -485,7 +485,8 @@ static int lo_rw_aio(struct loop_device *lo, struct loop_cmd *cmd, /* nomerge for loop request queue */ WARN_ON(cmd->rq->bio != cmd->rq->biotail); - bvec = __bvec_iter_bvec(bio->bi_io_vec, bio->bi_iter); + /* passed to iterate_bvec() */ + bvec = bio_get_base_vec(bio); iov_iter_bvec(&iter, ITER_BVEC | rw, bvec, bio_segments(bio), blk_rq_bytes(cmd->rq));