From patchwork Sun Feb 23 02:05:50 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Allison Henderson X-Patchwork-Id: 11398531 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id ECD981921 for ; Sun, 23 Feb 2020 02:06:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CD279206EF for ; Sun, 23 Feb 2020 02:06:11 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b="Su6MA/dU" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727166AbgBWCGG (ORCPT ); Sat, 22 Feb 2020 21:06:06 -0500 Received: from aserp2120.oracle.com ([141.146.126.78]:56230 "EHLO aserp2120.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727156AbgBWCGG (ORCPT ); Sat, 22 Feb 2020 21:06:06 -0500 Received: from pps.filterd (aserp2120.oracle.com [127.0.0.1]) by aserp2120.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 01N21fgP008652 for ; Sun, 23 Feb 2020 02:06:05 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=from : to : subject : date : message-id : in-reply-to : references; s=corp-2020-01-29; bh=J8oEyErwfMljB6kAr+MSnMiKVMAFLGC6WbS82/PRUig=; b=Su6MA/dUB+Ar+yrT1RQ4Hwg+VImb0PnKM4DyLmR+udGLbzijuoiILQ/gF1lFnKcThLnc 1OLTUKlrN5kP0SIparloGSViOID1kzXWXOKZfnBe7wLCTyDd5Eg8AYoprxo6CO7Y0Pd0 MUluJO88cS+MzU4jjlMExEFSXYDnMYpTWH0FgUNel33maO6RCEukLjAGcjNx3t7pV7qB wQACXTbpfc9azHNDFKro/v2aQwd9dF1RIY6nSQWhQZ3+u84sg42qLZLaS6bw/lP6Du0F ntw9n9hqkZta9nZlJAS2lNqsNscaZc48XzGQ7cHq8APzYBNFhqWx+PKPP25PYQQX3vdM IA== Received: from aserp3030.oracle.com (aserp3030.oracle.com [141.146.126.71]) by aserp2120.oracle.com with ESMTP id 2yav8qa0sj-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK) for ; Sun, 23 Feb 2020 02:06:05 +0000 Received: from pps.filterd (aserp3030.oracle.com [127.0.0.1]) by aserp3030.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 01N1wXWu172168 for ; Sun, 23 Feb 2020 02:06:04 GMT Received: from aserv0122.oracle.com (aserv0122.oracle.com [141.146.126.236]) by aserp3030.oracle.com with ESMTP id 2ybdure452-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK) for ; Sun, 23 Feb 2020 02:06:04 +0000 Received: from abhmp0010.oracle.com (abhmp0010.oracle.com [141.146.116.16]) by aserv0122.oracle.com (8.14.4/8.14.4) with ESMTP id 01N264Z9013080 for ; Sun, 23 Feb 2020 02:06:04 GMT Received: from localhost.localdomain (/67.1.3.112) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Sun, 23 Feb 2020 02:06:04 +0000 From: Allison Collins To: linux-xfs@vger.kernel.org Subject: [PATCH v7 16/20] xfsprogs: Add helper function xfs_attr_node_shrink Date: Sat, 22 Feb 2020 19:05:50 -0700 Message-Id: <20200223020554.1731-17-allison.henderson@oracle.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200223020554.1731-1-allison.henderson@oracle.com> References: <20200223020554.1731-1-allison.henderson@oracle.com> X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9539 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 adultscore=0 suspectscore=1 mlxlogscore=999 malwarescore=0 mlxscore=0 spamscore=0 phishscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2001150001 definitions=main-2002230014 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9539 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=1 impostorscore=0 adultscore=0 bulkscore=0 mlxlogscore=999 priorityscore=1501 spamscore=0 phishscore=0 malwarescore=0 mlxscore=0 clxscore=1015 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2001150001 definitions=main-2002230014 Sender: linux-xfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-xfs@vger.kernel.org This patch adds a new helper function xfs_attr_node_shrink used to shrink an attr name into an inode if it is small enough. This helps to modularize the greater calling function xfs_attr_node_removename. Signed-off-by: Allison Collins --- libxfs/xfs_attr.c | 66 +++++++++++++++++++++++++++++++++---------------------- 1 file changed, 40 insertions(+), 26 deletions(-) diff --git a/libxfs/xfs_attr.c b/libxfs/xfs_attr.c index 9d7989c..e71099c 100644 --- a/libxfs/xfs_attr.c +++ b/libxfs/xfs_attr.c @@ -1363,6 +1363,43 @@ out: } /* + * Shrink an attribute from leaf to shortform + */ +STATIC int +xfs_attr_node_shrink( + struct xfs_da_args *args, + struct xfs_da_state *state) +{ + struct xfs_inode *dp = args->dp; + int error, forkoff; + struct xfs_buf *bp; + + /* + * Have to get rid of the copy of this dabuf in the state. + */ + ASSERT(state->path.active == 1); + ASSERT(state->path.blk[0].bp); + state->path.blk[0].bp = NULL; + + error = xfs_attr3_leaf_read(args->trans, args->dp, 0, -1, &bp); + if (error) + return error; + + forkoff = xfs_attr_shortform_allfit(bp, dp); + if (forkoff) { + error = xfs_attr3_leaf_to_shortform(bp, args, forkoff); + /* bp is gone due to xfs_da_shrink_inode */ + if (error) + return error; + + args->dac.flags |= XFS_DAC_FINISH_TRANS; + } else + xfs_trans_brelse(args->trans, bp); + + return 0; +} + +/* * Remove a name from a B-tree attribute list. * * This will involve walking down the Btree, and may involve joining @@ -1380,8 +1417,7 @@ xfs_attr_node_removename( { struct xfs_da_state *state; struct xfs_da_state_blk *blk; - struct xfs_buf *bp; - int retval, error, forkoff; + int retval, error; struct xfs_inode *dp = args->dp; trace_xfs_attr_node_removename(args); @@ -1490,30 +1526,8 @@ rm_shrink: /* * If the result is small enough, push it all into the inode. */ - if (xfs_bmap_one_block(dp, XFS_ATTR_FORK)) { - /* - * Have to get rid of the copy of this dabuf in the state. - */ - ASSERT(state->path.active == 1); - ASSERT(state->path.blk[0].bp); - state->path.blk[0].bp = NULL; - - error = xfs_attr3_leaf_read(args->trans, args->dp, 0, -1, &bp); - if (error) - goto out; - - if ((forkoff = xfs_attr_shortform_allfit(bp, dp))) { - error = xfs_attr3_leaf_to_shortform(bp, args, forkoff); - /* bp is gone due to xfs_da_shrink_inode */ - if (error) - goto out; - error = xfs_defer_finish(&args->trans); - if (error) - goto out; - } else - xfs_trans_brelse(args->trans, bp); - } - error = 0; + if (xfs_bmap_one_block(dp, XFS_ATTR_FORK)) + error = xfs_attr_node_shrink(args, state); out: if (state)