From mboxrd@z Thu Jan 1 00:00:00 1970 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=-16.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=unavailable 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 BBF03C43214 for ; Tue, 24 Aug 2021 13:25:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A16AE61220 for ; Tue, 24 Aug 2021 13:25:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237555AbhHXNZo (ORCPT ); Tue, 24 Aug 2021 09:25:44 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:47059 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237551AbhHXNZn (ORCPT ); Tue, 24 Aug 2021 09:25:43 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1629811499; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=G+4vtigOnbB4xKnVedwIs1VfbakOzdLgEC5FdZhN+eM=; b=Oq3mLaGXsa67GBSeyXWzmb/RhQSZvRbP2/tfOGuj1QLj+kyTiMdqXumSlXm263Th48l4ha JKiRtOIGxblRKPKfXVH/TkoDvu8Ug3DpfAUoK7hPqfYCDF8KDUWksijt/54lePPsJfMz8M KGcuUJ5kF2pEAEdLWNwZ9W++yBmGuRk= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-264-rXlAd7NoOhOg2t924fZCug-1; Tue, 24 Aug 2021 09:24:55 -0400 X-MC-Unique: rXlAd7NoOhOg2t924fZCug-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id D95B91082921; Tue, 24 Aug 2021 13:24:53 +0000 (UTC) Received: from warthog.procyon.org.uk (unknown [10.33.36.86]) by smtp.corp.redhat.com (Postfix) with ESMTP id 5F82F5DF21; Tue, 24 Aug 2021 13:24:48 +0000 (UTC) Organization: Red Hat UK Ltd. Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SI4 1TE, United Kingdom. Registered in England and Wales under Company Registration No. 3798903 Subject: [PATCH 1/6] afs: Fix afs_launder_page() to set correct start file position From: David Howells To: "Matthew Wilcox (Oracle)" Cc: Jeffrey Altman , linux-afs@lists.infradead.org, dhowells@redhat.com, Jeff Layton , Ilya Dryomov , linux-fsdevel@vger.kernel.org, linux-cachefs@redhat.com, linux-afs@lists.infradead.org, linux-nfs@vger.kernel.org, linux-cifs@vger.kernel.org, ceph-devel@vger.kernel.org, v9fs-developer@lists.sourceforge.net, devel@lists.orangefs.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Date: Tue, 24 Aug 2021 14:24:47 +0100 Message-ID: <162981148752.1901565.3663780601682206026.stgit@warthog.procyon.org.uk> In-Reply-To: <162981147473.1901565.1455657509200944265.stgit@warthog.procyon.org.uk> References: <162981147473.1901565.1455657509200944265.stgit@warthog.procyon.org.uk> User-Agent: StGit/0.23 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 Precedence: bulk List-ID: X-Mailing-List: linux-cifs@vger.kernel.org Fix afs_launder_page() to set the starting position of the StoreData RPC at the offset into the page at which the modified data starts instead of at the beginning of the page (the iov_iter is correctly offset). The offset got lost during the conversion to passing an iov_iter into afs_store_data(). Fixes: bd80d8a80e12 ("afs: Use ITER_XARRAY for writing") Signed-off-by: David Howells Reviewed-by: Jeffrey Altman cc: linux-afs@lists.infradead.org Link: https://lore.kernel.org/r/162880783179.3421678.7795105718190440134.stgit@warthog.procyon.org.uk/ --- fs/afs/write.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/fs/afs/write.c b/fs/afs/write.c index fb7d5c1cabde..fff4c7d88e0d 100644 --- a/fs/afs/write.c +++ b/fs/afs/write.c @@ -950,8 +950,8 @@ int afs_launder_page(struct page *page) iov_iter_bvec(&iter, WRITE, bv, 1, bv[0].bv_len); trace_afs_page_dirty(vnode, tracepoint_string("launder"), page); - ret = afs_store_data(vnode, &iter, (loff_t)page->index * PAGE_SIZE, - true); + ret = afs_store_data(vnode, &iter, + (loff_t)page->index * PAGE_SIZE + f, true); } trace_afs_page_dirty(vnode, tracepoint_string("laundered"), page);