From patchwork Tue Apr 16 17:26:03 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Disseldorp X-Patchwork-Id: 10903569 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id ADE721850 for ; Tue, 16 Apr 2019 17:26:48 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 937C628820 for ; Tue, 16 Apr 2019 17:26:48 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 88085289DD; Tue, 16 Apr 2019 17:26:48 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 2D2A528820 for ; Tue, 16 Apr 2019 17:26:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728966AbfDPR0m (ORCPT ); Tue, 16 Apr 2019 13:26:42 -0400 Received: from mx2.suse.de ([195.135.220.15]:44616 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1728000AbfDPR0m (ORCPT ); Tue, 16 Apr 2019 13:26:42 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id 30BE2AD55; Tue, 16 Apr 2019 17:26:41 +0000 (UTC) From: David Disseldorp To: ceph-devel@vger.kernel.org Cc: Patrick Donnelly , Ilya Dryomov , Gregory Farnum , ukernel@gmail.com, David Disseldorp Subject: [PATCH v2 2/5] ceph: carry snapshot creation time with inodes Date: Tue, 16 Apr 2019 19:26:03 +0200 Message-Id: <20190416172606.26037-3-ddiss@suse.de> X-Mailer: git-send-email 2.16.4 In-Reply-To: <20190416172606.26037-1-ddiss@suse.de> References: <20190416172606.26037-1-ddiss@suse.de> Sender: ceph-devel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: ceph-devel@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP MDS InodeStat v3 wire structures include a trailing snapshot creation time member. Unmarshall this and retain it for a future vxattr. Link: https://tracker.ceph.com/issues/38838 Signed-off-by: David Disseldorp --- fs/ceph/inode.c | 1 + fs/ceph/mds_client.c | 8 ++++++++ fs/ceph/mds_client.h | 1 + fs/ceph/super.h | 1 + 4 files changed, 11 insertions(+) diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c index 2d61ddda9bf5..c2e82aeaf237 100644 --- a/fs/ceph/inode.c +++ b/fs/ceph/inode.c @@ -820,6 +820,7 @@ static int fill_inode(struct inode *inode, struct page *locked_page, dout("%p mode 0%o uid.gid %d.%d\n", inode, inode->i_mode, from_kuid(&init_user_ns, inode->i_uid), from_kgid(&init_user_ns, inode->i_gid)); + ceph_decode_timespec64(&ci->i_snap_btime, &iinfo->snap_btime); } if ((new_version || (new_issued & CEPH_CAP_LINK_SHARED)) && diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c index 21c33ed048ed..a9f2dc266597 100644 --- a/fs/ceph/mds_client.c +++ b/fs/ceph/mds_client.c @@ -166,6 +166,13 @@ static int parse_reply_info_in(void **p, void *end, info->dir_pin = -ENODATA; } + /* snapshot birth time, remains zero for v<=2 */ + if (struct_v >= 3) { + ceph_decode_need(p, end, sizeof(info->snap_btime), bad); + ceph_decode_copy(p, &info->snap_btime, + sizeof(info->snap_btime)); + } + *p = end; } else { if (features & CEPH_FEATURE_MDS_INLINE_DATA) { @@ -198,6 +205,7 @@ static int parse_reply_info_in(void **p, void *end, } info->dir_pin = -ENODATA; + /* info->snap_btime remains zero */ } return 0; bad: diff --git a/fs/ceph/mds_client.h b/fs/ceph/mds_client.h index 50385a481fdb..c5f7eca6ce3e 100644 --- a/fs/ceph/mds_client.h +++ b/fs/ceph/mds_client.h @@ -69,6 +69,7 @@ struct ceph_mds_reply_info_in { u64 max_bytes; u64 max_files; s32 dir_pin; + struct ceph_timespec snap_btime; }; struct ceph_mds_reply_dir_entry { diff --git a/fs/ceph/super.h b/fs/ceph/super.h index 16c03188578e..59233dce4ef4 100644 --- a/fs/ceph/super.h +++ b/fs/ceph/super.h @@ -386,6 +386,7 @@ struct ceph_inode_info { int i_snap_realm_counter; /* snap realm (if caps) */ struct list_head i_snap_realm_item; struct list_head i_snap_flush_item; + struct timespec64 i_snap_btime; struct work_struct i_wb_work; /* writeback work */ struct work_struct i_pg_inv_work; /* page invalidation work */