From patchwork Mon Nov 14 07:58:31 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Qu Wenruo X-Patchwork-Id: 9426717 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 63C7860756 for ; Mon, 14 Nov 2016 08:00:00 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 55BA52863F for ; Mon, 14 Nov 2016 08:00:00 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 4A8DF28676; Mon, 14 Nov 2016 08:00:00 +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=-6.9 required=2.0 tests=BAYES_00,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 CF0EA2862A for ; Mon, 14 Nov 2016 07:59:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933625AbcKNH7y (ORCPT ); Mon, 14 Nov 2016 02:59:54 -0500 Received: from cn.fujitsu.com ([222.73.24.84]:7138 "EHLO song.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1754202AbcKNH7u (ORCPT ); Mon, 14 Nov 2016 02:59:50 -0500 X-IronPort-AV: E=Sophos;i="5.20,367,1444665600"; d="scan'208";a="959745" Received: from unknown (HELO cn.fujitsu.com) ([10.167.250.3]) by song.cn.fujitsu.com with ESMTP; 14 Nov 2016 15:58:52 +0800 Received: from localhost.localdomain (unknown [10.167.226.34]) by cn.fujitsu.com (Postfix) with ESMTP id 990F541B4BC8 for ; Mon, 14 Nov 2016 15:58:45 +0800 (CST) From: Qu Wenruo To: linux-btrfs@vger.kernel.org Subject: [PATCH v14.1 08/16] btrfs: delayed-ref: Add support for increasing data ref under spinlock Date: Mon, 14 Nov 2016 15:58:31 +0800 Message-Id: <20161114075839.23587-9-quwenruo@cn.fujitsu.com> X-Mailer: git-send-email 2.10.2 In-Reply-To: <20161114075839.23587-1-quwenruo@cn.fujitsu.com> References: <20161114075839.23587-1-quwenruo@cn.fujitsu.com> MIME-Version: 1.0 X-yoursite-MailScanner-ID: 990F541B4BC8.AC83E X-yoursite-MailScanner: Found to be clean X-yoursite-MailScanner-From: quwenruo@cn.fujitsu.com Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP For in-band dedupe, btrfs needs to increase data ref with delayed_ref locked, so add a new function btrfs_add_delayed_data_ref_lock() to increase extent ref with delayed_refs already locked. Signed-off-by: Qu Wenruo Reviewed-by: Josef Bacik --- fs/btrfs/delayed-ref.c | 30 +++++++++++++++++++++++------- fs/btrfs/delayed-ref.h | 8 ++++++++ 2 files changed, 31 insertions(+), 7 deletions(-) diff --git a/fs/btrfs/delayed-ref.c b/fs/btrfs/delayed-ref.c index 8d93854..dccce10 100644 --- a/fs/btrfs/delayed-ref.c +++ b/fs/btrfs/delayed-ref.c @@ -805,6 +805,26 @@ free_ref: } /* + * Do real delayed data ref insert. + * Caller must hold delayed_refs->lock and allocation memory + * for dref,head_ref and record. + */ +void btrfs_add_delayed_data_ref_locked(struct btrfs_fs_info *fs_info, + struct btrfs_trans_handle *trans, + struct btrfs_delayed_data_ref *dref, + struct btrfs_delayed_ref_head *head_ref, + struct btrfs_qgroup_extent_record *qrecord, + u64 bytenr, u64 num_bytes, u64 parent, u64 ref_root, + u64 owner, u64 offset, u64 reserved, int action) +{ + head_ref = add_delayed_ref_head(fs_info, trans, &head_ref->node, + qrecord, bytenr, num_bytes, ref_root, reserved, + action, 1); + add_delayed_data_ref(fs_info, trans, head_ref, &dref->node, bytenr, + num_bytes, parent, ref_root, owner, offset, action); +} + +/* * add a delayed data ref. it's similar to btrfs_add_delayed_tree_ref. */ int btrfs_add_delayed_data_ref(struct btrfs_fs_info *fs_info, @@ -850,13 +870,9 @@ int btrfs_add_delayed_data_ref(struct btrfs_fs_info *fs_info, * insert both the head node and the new ref without dropping * the spin lock */ - head_ref = add_delayed_ref_head(fs_info, trans, &head_ref->node, record, - bytenr, num_bytes, ref_root, reserved, - action, 1); - - add_delayed_data_ref(fs_info, trans, head_ref, &ref->node, bytenr, - num_bytes, parent, ref_root, owner, offset, - action); + btrfs_add_delayed_data_ref_locked(fs_info, trans, ref, head_ref, record, + bytenr, num_bytes, parent, ref_root, owner, offset, + reserved, action); spin_unlock(&delayed_refs->lock); return 0; diff --git a/fs/btrfs/delayed-ref.h b/fs/btrfs/delayed-ref.h index 43f3629..d3a4369 100644 --- a/fs/btrfs/delayed-ref.h +++ b/fs/btrfs/delayed-ref.h @@ -239,11 +239,19 @@ static inline void btrfs_put_delayed_ref(struct btrfs_delayed_ref_node *ref) } } +struct btrfs_qgroup_extent_record; int btrfs_add_delayed_tree_ref(struct btrfs_fs_info *fs_info, struct btrfs_trans_handle *trans, u64 bytenr, u64 num_bytes, u64 parent, u64 ref_root, int level, int action, struct btrfs_delayed_extent_op *extent_op); +void btrfs_add_delayed_data_ref_locked(struct btrfs_fs_info *fs_info, + struct btrfs_trans_handle *trans, + struct btrfs_delayed_data_ref *dref, + struct btrfs_delayed_ref_head *head_ref, + struct btrfs_qgroup_extent_record *qrecord, + u64 bytenr, u64 num_bytes, u64 parent, u64 ref_root, + u64 owner, u64 offset, u64 reserved, int action); int btrfs_add_delayed_data_ref(struct btrfs_fs_info *fs_info, struct btrfs_trans_handle *trans, u64 bytenr, u64 num_bytes,