From patchwork Mon May 20 15:11:23 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zhiyong Wu X-Patchwork-Id: 2593821 Return-Path: X-Original-To: patchwork-linux-btrfs@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork2.kernel.org (Postfix) with ESMTP id 4FBB1DFB79 for ; Mon, 20 May 2013 15:11:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757301Ab3ETPKz (ORCPT ); Mon, 20 May 2013 11:10:55 -0400 Received: from e39.co.us.ibm.com ([32.97.110.160]:44729 "EHLO e39.co.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757216Ab3ETPKu (ORCPT ); Mon, 20 May 2013 11:10:50 -0400 Received: from /spool/local by e39.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Mon, 20 May 2013 09:10:49 -0600 Received: from d01dlp03.pok.ibm.com (9.56.250.168) by e39.co.us.ibm.com (192.168.1.139) with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted; Mon, 20 May 2013 09:10:46 -0600 Received: from d01relay05.pok.ibm.com (d01relay05.pok.ibm.com [9.56.227.237]) by d01dlp03.pok.ibm.com (Postfix) with ESMTP id 021DDC90026; Mon, 20 May 2013 11:10:45 -0400 (EDT) Received: from d03av02.boulder.ibm.com (d03av02.boulder.ibm.com [9.17.195.168]) by d01relay05.pok.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id r4KFAjAE317998; Mon, 20 May 2013 11:10:45 -0400 Received: from d03av02.boulder.ibm.com (loopback [127.0.0.1]) by d03av02.boulder.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id r4KFAfrX011331; Mon, 20 May 2013 09:10:41 -0600 Received: from us.ibm.com (f17.cn.ibm.com [9.115.122.140]) by d03av02.boulder.ibm.com (8.14.4/8.13.1/NCO v10.0 AVin) with SMTP id r4KFAHpY008069; Mon, 20 May 2013 09:10:18 -0600 Received: by us.ibm.com (sSMTP sendmail emulation); Mon, 20 May 2013 23:11:32 +0800 From: zwu.kernel@gmail.com To: linux-btrfs@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Zhi Yong Wu Subject: [RFC PATCH v1 1/5] BTRFS hot reloc, vfs: add one list_head field Date: Mon, 20 May 2013 23:11:23 +0800 Message-Id: <1369062687-23544-2-git-send-email-zwu.kernel@gmail.com> X-Mailer: git-send-email 1.7.11.7 In-Reply-To: <1369062687-23544-1-git-send-email-zwu.kernel@gmail.com> References: <1369062687-23544-1-git-send-email-zwu.kernel@gmail.com> X-TM-AS-MML: No X-Content-Scanned: Fidelis XPS MAILER x-cbid: 13052015-3620-0000-0000-000002943440 Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org From: Zhi Yong Wu Add one list_head field 'reloc_list' to accommodate hot relocation support. Signed-off-by: Zhi Yong Wu --- fs/hot_tracking.c | 1 + include/linux/hot_tracking.h | 1 + 2 files changed, 2 insertions(+) diff --git a/fs/hot_tracking.c b/fs/hot_tracking.c index 46d2f7d..2a59b09 100644 --- a/fs/hot_tracking.c +++ b/fs/hot_tracking.c @@ -41,6 +41,7 @@ static void hot_comm_item_init(struct hot_comm_item *ci, int type) clear_bit(HOT_IN_LIST, &ci->delete_flag); clear_bit(HOT_DELETING, &ci->delete_flag); INIT_LIST_HEAD(&ci->track_list); + INIT_LIST_HEAD(&ci->reloc_list); memset(&ci->hot_freq_data, 0, sizeof(struct hot_freq_data)); ci->hot_freq_data.avg_delta_reads = (u64) -1; ci->hot_freq_data.avg_delta_writes = (u64) -1; diff --git a/include/linux/hot_tracking.h b/include/linux/hot_tracking.h index 008a5c1..faf1acc 100644 --- a/include/linux/hot_tracking.h +++ b/include/linux/hot_tracking.h @@ -74,6 +74,7 @@ struct hot_comm_item { unsigned long delete_flag; struct rcu_head c_rcu; struct list_head track_list; /* link to *_map[] */ + struct list_head reloc_list; /* used in hot relocation*/ }; /* An item representing an inode and its access frequency */