From patchwork Mon Oct 18 15:00:56 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Howells X-Patchwork-Id: 12567113 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 02EA0C433F5 for ; Mon, 18 Oct 2021 15:02:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DC4F260EC0 for ; Mon, 18 Oct 2021 15:02:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232067AbhJRPEi (ORCPT ); Mon, 18 Oct 2021 11:04:38 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:43241 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233476AbhJRPDT (ORCPT ); Mon, 18 Oct 2021 11:03:19 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1634569267; 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=tyfueRWcvZbFZpicF1tHL+3lmAtJffKA8+YjsGo6828=; b=J/PepAiR/xLvL0ukququJkxldIXIFFWwZEB+4UpT+A/PF1Yt6XSY6oErxbEc+QrWfi0POi OM8kTM2szKQKyOmiKFosvF08unCHgem6MkRvXfOTz8VtJ6Eyf31UqJo7vncISIOWIyiX11 JmWcH/RJ+K7N1Bxe/9hzOMtO34dHVo4= 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-321-2IzxT3O8Mg-udXAv-P67-Q-1; Mon, 18 Oct 2021 11:01:04 -0400 X-MC-Unique: 2IzxT3O8Mg-udXAv-P67-Q-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id D4C4C80DDE3; Mon, 18 Oct 2021 15:01:00 +0000 (UTC) Received: from warthog.procyon.org.uk (unknown [10.33.36.19]) by smtp.corp.redhat.com (Postfix) with ESMTP id 943FF60BF4; Mon, 18 Oct 2021 15:00:57 +0000 (UTC) Organization: Red Hat UK Ltd. 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Registered in England and Wales under Company Registration No. 3798903 Subject: [PATCH 41/67] afs: Render cache cookie key as big endian From: David Howells To: linux-cachefs@redhat.com Cc: Marc Dionne , linux-afs@lists.infradead.org, dhowells@redhat.com, Trond Myklebust , Anna Schumaker , Steve French , Dominique Martinet , Jeff Layton , Matthew Wilcox , Alexander Viro , Omar Sandoval , Linus Torvalds , 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, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org Date: Mon, 18 Oct 2021 16:00:56 +0100 Message-ID: <163456925673.2614702.17571187496574827113.stgit@warthog.procyon.org.uk> In-Reply-To: <163456861570.2614702.14754548462706508617.stgit@warthog.procyon.org.uk> References: <163456861570.2614702.14754548462706508617.stgit@warthog.procyon.org.uk> User-Agent: StGit/0.23 MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Precedence: bulk List-ID: X-Mailing-List: linux-cifs@vger.kernel.org Render the parts of the cookie key for an afs inode cookie as big endian. Signed-off-by: David Howells cc: Marc Dionne cc: linux-afs@lists.infradead.org --- fs/afs/file.c | 2 +- fs/afs/inode.c | 16 ++++++++-------- fs/afs/internal.h | 8 +++++++- 3 files changed, 16 insertions(+), 10 deletions(-) diff --git a/fs/afs/file.c b/fs/afs/file.c index b4666da93b54..5e29d433960d 100644 --- a/fs/afs/file.c +++ b/fs/afs/file.c @@ -189,7 +189,7 @@ int afs_release(struct inode *inode, struct file *file) if ((file->f_mode & FMODE_WRITE)) { i_size = i_size_read(&vnode->vfs_inode); - aux.data_version = vnode->status.data_version; + afs_set_cache_aux(vnode, &aux); fscache_unuse_cookie(afs_vnode_cache(vnode), &aux, &i_size); } else { fscache_unuse_cookie(afs_vnode_cache(vnode), NULL, NULL); diff --git a/fs/afs/inode.c b/fs/afs/inode.c index c21c1352b149..842570e4470f 100644 --- a/fs/afs/inode.c +++ b/fs/afs/inode.c @@ -413,9 +413,9 @@ static void afs_get_inode_cache(struct afs_vnode *vnode) { #ifdef CONFIG_AFS_FSCACHE struct { - u32 vnode_id; - u32 unique; - u32 vnode_id_ext[2]; /* Allow for a 96-bit key */ + __be32 vnode_id; + __be32 unique; + __be32 vnode_id_ext[2]; /* Allow for a 96-bit key */ } __packed key; struct afs_vnode_cache_aux aux; @@ -424,11 +424,11 @@ static void afs_get_inode_cache(struct afs_vnode *vnode) return; } - key.vnode_id = vnode->fid.vnode; - key.unique = vnode->fid.unique; - key.vnode_id_ext[0] = vnode->fid.vnode >> 32; - key.vnode_id_ext[1] = vnode->fid.vnode_hi; - aux.data_version = vnode->status.data_version; + key.vnode_id = htonl(vnode->fid.vnode); + key.unique = htonl(vnode->fid.unique); + key.vnode_id_ext[0] = htonl(vnode->fid.vnode >> 32); + key.vnode_id_ext[1] = htonl(vnode->fid.vnode_hi); + afs_set_cache_aux(vnode, &aux); vnode->cache = fscache_acquire_cookie( vnode->volume->cache, diff --git a/fs/afs/internal.h b/fs/afs/internal.h index 8e168c3fa5d1..3180ba6bd46d 100644 --- a/fs/afs/internal.h +++ b/fs/afs/internal.h @@ -869,9 +869,15 @@ struct afs_operation { * Cache auxiliary data. */ struct afs_vnode_cache_aux { - u64 data_version; + __be64 data_version; } __packed; +static inline void afs_set_cache_aux(struct afs_vnode *vnode, + struct afs_vnode_cache_aux *aux) +{ + aux->data_version = cpu_to_be64(vnode->status.data_version); +} + /* * We use page->private to hold the amount of the page that we've written to, * splitting the field into two parts. However, we need to represent a range