From patchwork Mon Oct 11 13:45:58 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 12550075 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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 81364C4332F for ; Mon, 11 Oct 2021 14:07:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5EBB560EB1 for ; Mon, 11 Oct 2021 14:07:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238239AbhJKOJm (ORCPT ); Mon, 11 Oct 2021 10:09:42 -0400 Received: from mail.kernel.org ([198.145.29.99]:55468 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239272AbhJKOGk (ORCPT ); Mon, 11 Oct 2021 10:06:40 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id F3F8E61214; Mon, 11 Oct 2021 14:00:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1633960824; bh=50oME831S3Wg+JzgZ5JeOp45VWeZ+pM3vP9xiNjtWNk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=wZqTxlRiBGbc5UDUhm/2VYFvoNcPqasJiUDU2TSf9U2WnPp+CEQTZBMBBVsSmpc27 loCHOegMolWHoibcV1lXhszxQQ9q1gb48al9axrK9YK6HUdM4oT5k2dfD3y1shRuvT jhgkqEjuHy3cniWhuqFJMmCTktigYwq7lfSdbLjw= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, David Howells , Jeff Layton , linux-cachefs@redhat.com, linux-afs@lists.infradead.org, ceph-devel@vger.kernel.org, linux-cifs@vger.kernel.org, linux-nfs@vger.kernel.org, v9fs-developer@lists.sourceforge.net, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, Sasha Levin Subject: [PATCH 5.14 086/151] netfs: Fix READ/WRITE confusion when calling iov_iter_xarray() Date: Mon, 11 Oct 2021 15:45:58 +0200 Message-Id: <20211011134520.620511034@linuxfoundation.org> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20211011134517.833565002@linuxfoundation.org> References: <20211011134517.833565002@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: ceph-devel@vger.kernel.org From: David Howells [ Upstream commit 330de47d14af0c3995db81cc03cf5ca683d94d81 ] Fix netfs_clear_unread() to pass READ to iov_iter_xarray() instead of WRITE (the flag is about the operation accessing the buffer, not what sort of access it is doing to the buffer). Fixes: 3d3c95046742 ("netfs: Provide readahead and readpage netfs helpers") Signed-off-by: David Howells Reviewed-by: Jeff Layton cc: linux-cachefs@redhat.com cc: linux-afs@lists.infradead.org cc: ceph-devel@vger.kernel.org cc: linux-cifs@vger.kernel.org cc: linux-nfs@vger.kernel.org cc: v9fs-developer@lists.sourceforge.net cc: linux-fsdevel@vger.kernel.org cc: linux-mm@kvack.org Link: https://lore.kernel.org/r/162729351325.813557.9242842205308443901.stgit@warthog.procyon.org.uk/ Link: https://lore.kernel.org/r/162886603464.3940407.3790841170414793899.stgit@warthog.procyon.org.uk Link: https://lore.kernel.org/r/163239074602.1243337.14154704004485867017.stgit@warthog.procyon.org.uk Signed-off-by: Sasha Levin --- fs/netfs/read_helper.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/netfs/read_helper.c b/fs/netfs/read_helper.c index 0b6cd3b8734c..994ec22d4040 100644 --- a/fs/netfs/read_helper.c +++ b/fs/netfs/read_helper.c @@ -150,7 +150,7 @@ static void netfs_clear_unread(struct netfs_read_subrequest *subreq) { struct iov_iter iter; - iov_iter_xarray(&iter, WRITE, &subreq->rreq->mapping->i_pages, + iov_iter_xarray(&iter, READ, &subreq->rreq->mapping->i_pages, subreq->start + subreq->transferred, subreq->len - subreq->transferred); iov_iter_zero(iov_iter_count(&iter), &iter);