From patchwork Fri Jun 30 15:25:20 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Howells X-Patchwork-Id: 13298392 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 63B1CEB64D7 for ; Fri, 30 Jun 2023 15:28:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232644AbjF3P2g (ORCPT ); Fri, 30 Jun 2023 11:28:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42908 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232535AbjF3P1P (ORCPT ); Fri, 30 Jun 2023 11:27:15 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 962C43C3E for ; Fri, 30 Jun 2023 08:25:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1688138755; 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=7s8hoY7EpXAbXFSpowadN1tdtKV1KZLtOvJuBTKdpmw=; b=Rf3ic+zmd4kJiFmnAGt0y7Gv5wDmC6njgEfp7iMRUHp3mljk6BUT7WC2JvVHAvOUs/PDdj uKQgYOcsCg/tpkIk5Ug0QIomMgjSIA/ecNygaZf1DNAcq+g72ZGruztSJJ4STNqI7zXJRo qg8UlUB7oz2A21ZcsfnQY38tEaXxMjA= Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-338-Zp02hgoBNIOVX0nerBYChA-1; Fri, 30 Jun 2023 11:25:50 -0400 X-MC-Unique: Zp02hgoBNIOVX0nerBYChA-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.rdu2.redhat.com [10.11.54.2]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 1C5C23C0E456; Fri, 30 Jun 2023 15:25:49 +0000 (UTC) Received: from warthog.procyon.org.uk.com (unknown [10.42.28.195]) by smtp.corp.redhat.com (Postfix) with ESMTP id 18E074087C6A; Fri, 30 Jun 2023 15:25:45 +0000 (UTC) From: David Howells To: Jens Axboe , Al Viro , Christoph Hellwig Cc: David Howells , Matthew Wilcox , Jan Kara , Jeff Layton , David Hildenbrand , Jason Gunthorpe , Logan Gunthorpe , Hillf Danton , Christian Brauner , linux-fsdevel@vger.kernel.org, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, Steve French , Paulo Alcantara , Ronnie Sahlberg , Shyam Prasad N , Tom Talpey , Christoph Hellwig , Christian Brauner , linux-cifs@vger.kernel.org Subject: [RFC PATCH 07/11] cifs: Drop the check using iov_iter_rw() Date: Fri, 30 Jun 2023 16:25:20 +0100 Message-ID: <20230630152524.661208-8-dhowells@redhat.com> In-Reply-To: <20230630152524.661208-1-dhowells@redhat.com> References: <20230630152524.661208-1-dhowells@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.2 Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org smbd_recv() has a check that the iterator is the correct direction. Drop this check as we're getting rid of iov_iter_rw(). Signed-off-by: David Howells cc: Steve French cc: Paulo Alcantara cc: Ronnie Sahlberg cc: Shyam Prasad N cc: Tom Talpey cc: Christoph Hellwig cc: Jens Axboe cc: Christian Brauner cc: Alexander Viro cc: linux-cifs@vger.kernel.org cc: linux-block@vger.kernel.org cc: linux-fsdevel@vger.kernel.org --- fs/smb/client/smbdirect.c | 9 --------- 1 file changed, 9 deletions(-) diff --git a/fs/smb/client/smbdirect.c b/fs/smb/client/smbdirect.c index 223e17c16b60..672078d00207 100644 --- a/fs/smb/client/smbdirect.c +++ b/fs/smb/client/smbdirect.c @@ -1906,14 +1906,6 @@ int smbd_recv(struct smbd_connection *info, struct msghdr *msg) unsigned int to_read, page_offset; int rc; - if (iov_iter_rw(&msg->msg_iter) == WRITE) { - /* It's a bug in upper layer to get there */ - cifs_dbg(VFS, "Invalid msg iter dir %u\n", - iov_iter_rw(&msg->msg_iter)); - rc = -EINVAL; - goto out; - } - switch (iov_iter_type(&msg->msg_iter)) { case ITER_KVEC: buf = msg->msg_iter.kvec->iov_base; @@ -1935,7 +1927,6 @@ int smbd_recv(struct smbd_connection *info, struct msghdr *msg) rc = -EINVAL; } -out: /* SMBDirect will read it all or nothing */ if (rc > 0) msg->msg_iter.count = 0;