From patchwork Wed Apr 12 10:30:12 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 9677075 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 1DCCD60325 for ; Wed, 12 Apr 2017 10:30:32 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 10520285E8 for ; Wed, 12 Apr 2017 10:30:32 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 05309285EC; Wed, 12 Apr 2017 10:30:32 +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=-6.8 required=2.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_HI,T_DKIM_INVALID 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 65C9E285E8 for ; Wed, 12 Apr 2017 10:30:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752537AbdDLKab (ORCPT ); Wed, 12 Apr 2017 06:30:31 -0400 Received: from bombadil.infradead.org ([65.50.211.133]:49242 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751921AbdDLKaa (ORCPT ); Wed, 12 Apr 2017 06:30:30 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=References:In-Reply-To:Message-Id: Date:Subject:To:From:Sender:Reply-To:Cc:MIME-Version:Content-Type: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=pFr6txuXCplrhMKEMQQsuIiZFrTbUogXuNoZD+eIDNA=; b=V1xgEY1EmYvWwjIQdzrTKEbkb vqTILbr/k869rF2j5VLtDwtVyQpB8I4ov/dkwg+3gfyy9pasuD98RCQok1i3s0cWtFBZLt7ZiyMss cNZ5tL+hjG6Jw0MDeGMqeOe1KjZ65O3/PRRCbCncBj/n+5Kqs2KdiyfpBWohR3lKp1gpQvP6fXSD6 vmq0qXaAR946pHz6Ln8mjLib7KsGuGulTxqn4D0YM3RnoFMBfJI+tRQhHOwDr57Yi/gRnivl88tbr jvv8Lb53GRfxg6ugSrrnUio3Q7oInQXhxedDubA7Fq8KlcvmA0prl0yz9sMDj89PQXZJDqQIGd9hP K0YPEdYVA==; Received: from clnet-p099-196.ikbnet.co.at ([83.175.99.196] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.87 #1 (Red Hat Linux)) id 1cyFXh-0004jz-Ix for linux-xfs@vger.kernel.org; Wed, 12 Apr 2017 10:30:29 +0000 From: Christoph Hellwig To: linux-xfs@vger.kernel.org Subject: [PATCH 5/6] xfs: remove xfs_bmap_remap_alloc Date: Wed, 12 Apr 2017 12:30:12 +0200 Message-Id: <20170412103013.9355-6-hch@lst.de> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20170412103013.9355-1-hch@lst.de> References: <20170412103013.9355-1-hch@lst.de> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-xfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-xfs@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The main thing that xfs_bmap_remap_alloc does is fixing the AGFL, similar to what we do in the space allocator. But the reflink code doesn't touch the allocation btree unlike the normal space allocator, so we couldn't care less about the state of the AGFL. So remove xfs_bmap_remap_alloc and just handle the di_nblocks update in the caller. Signed-off-by: Christoph Hellwig Reviewed-by: Darrick J. Wong --- fs/xfs/libxfs/xfs_bmap.c | 60 ++---------------------------------------------- fs/xfs/xfs_trace.h | 25 -------------------- 2 files changed, 2 insertions(+), 83 deletions(-) diff --git a/fs/xfs/libxfs/xfs_bmap.c b/fs/xfs/libxfs/xfs_bmap.c index a1d9086ac737..9f55e5185d56 100644 --- a/fs/xfs/libxfs/xfs_bmap.c +++ b/fs/xfs/libxfs/xfs_bmap.c @@ -3856,61 +3856,6 @@ xfs_bmap_btalloc( } /* - * For a remap operation, just "allocate" an extent at the address that the - * caller passed in, and ensure that the AGFL is the right size. The caller - * will then map the "allocated" extent into the file somewhere. - */ -STATIC int -xfs_bmap_remap_alloc( - struct xfs_trans *tp, - struct xfs_inode *ip, - xfs_fsblock_t startblock, - xfs_extlen_t length) -{ - struct xfs_mount *mp = tp->t_mountp; - struct xfs_alloc_arg args; - int error; - - /* - * validate that the block number is legal - the enables us to detect - * and handle a silent filesystem corruption rather than crashing. - */ - memset(&args, 0, sizeof(struct xfs_alloc_arg)); - args.tp = tp; - args.mp = mp; - args.agno = XFS_FSB_TO_AGNO(mp, startblock); - args.agbno = XFS_FSB_TO_AGBNO(mp, startblock); - - if (args.agno >= mp->m_sb.sb_agcount || - args.agbno >= mp->m_sb.sb_agblocks) - return -EFSCORRUPTED; - - /* "Allocate" the extent from the range we passed in. */ - trace_xfs_bmap_remap_alloc(ip, startblock, length); - - ip->i_d.di_nblocks += length; - xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); - - /* Fix the freelist, like a real allocator does. */ - args.datatype = XFS_ALLOC_USERDATA | XFS_ALLOC_NOBUSY; - args.pag = xfs_perag_get(mp, args.agno); - ASSERT(args.pag); - - /* - * The freelist fixing code will decline the allocation if - * the size and shape of the free space doesn't allow for - * allocating the extent and updating all the metadata that - * happens during an allocation. We're remapping, not - * allocating, so skip that check by pretending to be freeing. - */ - error = xfs_alloc_fix_freelist(&args, XFS_ALLOC_FLAG_FREEING); - xfs_perag_put(args.pag); - if (error) - trace_xfs_bmap_remap_alloc_error(ip, error, _RET_IP_); - return error; -} - -/* * xfs_bmap_alloc is called by xfs_bmapi to allocate an extent for a file. * It figures out where to ask the underlying allocator to put the new extent. */ @@ -4811,9 +4756,8 @@ xfs_bmapi_remap( ASSERT(got.br_startoff - bno >= len); } - error = xfs_bmap_remap_alloc(tp, ip, startblock, len); - if (error) - goto error0; + ip->i_d.di_nblocks += len; + xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); if (ifp->if_flags & XFS_IFBROOT) { cur = xfs_bmbt_init_cursor(mp, tp, ip, XFS_DATA_FORK); diff --git a/fs/xfs/xfs_trace.h b/fs/xfs/xfs_trace.h index 4f96dc953fbe..cba10daf8391 100644 --- a/fs/xfs/xfs_trace.h +++ b/fs/xfs/xfs_trace.h @@ -3003,31 +3003,6 @@ DEFINE_EVENT(xfs_inode_error_class, name, \ unsigned long caller_ip), \ TP_ARGS(ip, error, caller_ip)) -/* reflink allocator */ -TRACE_EVENT(xfs_bmap_remap_alloc, - TP_PROTO(struct xfs_inode *ip, xfs_fsblock_t fsbno, - xfs_extlen_t len), - TP_ARGS(ip, fsbno, len), - TP_STRUCT__entry( - __field(dev_t, dev) - __field(xfs_ino_t, ino) - __field(xfs_fsblock_t, fsbno) - __field(xfs_extlen_t, len) - ), - TP_fast_assign( - __entry->dev = VFS_I(ip)->i_sb->s_dev; - __entry->ino = ip->i_ino; - __entry->fsbno = fsbno; - __entry->len = len; - ), - TP_printk("dev %d:%d ino 0x%llx fsbno 0x%llx len %x", - MAJOR(__entry->dev), MINOR(__entry->dev), - __entry->ino, - __entry->fsbno, - __entry->len) -); -DEFINE_INODE_ERROR_EVENT(xfs_bmap_remap_alloc_error); - /* reflink tracepoint classes */ /* two-file io tracepoint class */