From patchwork Wed Dec 30 19:12:34 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jonathan Lemon X-Patchwork-Id: 355484 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.7 required=3.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 616AFC433E6 for ; Wed, 30 Dec 2020 19:13:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 277B422287 for ; Wed, 30 Dec 2020 19:13:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726627AbgL3TNe convert rfc822-to-8bit (ORCPT ); Wed, 30 Dec 2020 14:13:34 -0500 Received: from mx0a-00082601.pphosted.com ([67.231.145.42]:53992 "EHLO mx0a-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726571AbgL3TNc (ORCPT ); Wed, 30 Dec 2020 14:13:32 -0500 Received: from pps.filterd (m0148461.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.16.0.43/8.16.0.43) with SMTP id 0BUJ8hPp023520 for ; Wed, 30 Dec 2020 11:12:52 -0800 Received: from maileast.thefacebook.com ([163.114.130.16]) by mx0a-00082601.pphosted.com with ESMTP id 35rh4ytyae-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Wed, 30 Dec 2020 11:12:51 -0800 Received: from intmgw005.03.ash8.facebook.com (2620:10d:c0a8:1b::d) by mail.thefacebook.com (2620:10d:c0a8:82::c) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1979.3; Wed, 30 Dec 2020 11:12:50 -0800 Received: by devvm2494.atn0.facebook.com (Postfix, from userid 172786) id 304DF610FBB2; Wed, 30 Dec 2020 11:12:44 -0800 (PST) From: Jonathan Lemon To: , , , CC: Subject: [RFC PATCH v3 02/12] skbuff: simplify sock_zerocopy_put Date: Wed, 30 Dec 2020 11:12:34 -0800 Message-ID: <20201230191244.610449-3-jonathan.lemon@gmail.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20201230191244.610449-1-jonathan.lemon@gmail.com> References: <20201230191244.610449-1-jonathan.lemon@gmail.com> MIME-Version: 1.0 X-FB-Internal: Safe X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.343, 18.0.737 definitions=2020-12-30_12:2020-12-30,2020-12-30 signatures=0 X-Proofpoint-Spam-Details: rule=fb_default_notspam policy=fb_default score=0 priorityscore=1501 phishscore=0 suspectscore=0 mlxlogscore=960 spamscore=0 mlxscore=0 bulkscore=0 clxscore=1034 adultscore=0 lowpriorityscore=0 malwarescore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2012300118 X-FB-Internal: deliver Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Jonathan Lemon All 'struct ubuf_info' users should have a callback defined as of commit 0a4a060bb204 ("sock: fix zerocopy_success regression with msg_zerocopy"). Remove the dead code path to consume_skb(), which makes assumptions about how the structure was allocated. Signed-off-by: Jonathan Lemon Acked-by: Willem de Bruijn --- net/core/skbuff.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) diff --git a/net/core/skbuff.c b/net/core/skbuff.c index f62cae3f75d8..d88963f47f7d 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -1245,12 +1245,8 @@ EXPORT_SYMBOL_GPL(sock_zerocopy_callback); void sock_zerocopy_put(struct ubuf_info *uarg) { - if (uarg && refcount_dec_and_test(&uarg->refcnt)) { - if (uarg->callback) - uarg->callback(uarg, uarg->zerocopy); - else - consume_skb(skb_from_uarg(uarg)); - } + if (uarg && refcount_dec_and_test(&uarg->refcnt)) + uarg->callback(uarg, uarg->zerocopy); } EXPORT_SYMBOL_GPL(sock_zerocopy_put);