From patchwork Thu Jun 25 23:30:13 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Allison Henderson X-Patchwork-Id: 11626309 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 50FB1913 for ; Thu, 25 Jun 2020 23:32:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3702D2084D for ; Thu, 25 Jun 2020 23:32:52 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b="trk4/r83" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725852AbgFYXcv (ORCPT ); Thu, 25 Jun 2020 19:32:51 -0400 Received: from userp2120.oracle.com ([156.151.31.85]:53372 "EHLO userp2120.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725841AbgFYXcu (ORCPT ); Thu, 25 Jun 2020 19:32:50 -0400 Received: from pps.filterd (userp2120.oracle.com [127.0.0.1]) by userp2120.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 05PNSWXa012439 for ; Thu, 25 Jun 2020 23:32:49 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=xot8efOUoQ6pLHmJNTTf9PdiPFeM0UUl/A20FYsUqWc=; b=trk4/r83okMpFLIyoSUDKY8gQxvpP6srQzZpd5oAG3uekZVw/upmScde+t4TfcFnApVs ADKhLd8+QuclUIM0mmTq7VBhzU0pFKEg7UgqkavepXzN+M94JKSPRocKDsJkmUMEt5IG FDLXudTImrW5z6d4N2l6KfR7WcdLmURnUQwXFEL7w7DTmppFiSzpSwwzQTnwFET7tEKo MOhSekrpadcXfaYsrPbWnMOR2v88SHMxtIEgv5JkbFDp9WlzXz+x7k/ZA3d8Kf6ADFhm 7bZcg9J5zoS08HQx/xEh2DMNK1tj2UOrFHaevBlnuF0pirCJIMs3/vLOxIPWBD2as/3X Eg== Received: from userp3020.oracle.com (userp3020.oracle.com [156.151.31.79]) by userp2120.oracle.com with ESMTP id 31uustu9et-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL) for ; Thu, 25 Jun 2020 23:32:49 +0000 Received: from pps.filterd (userp3020.oracle.com [127.0.0.1]) by userp3020.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 05PNSIL0110933 for ; Thu, 25 Jun 2020 23:30:48 GMT Received: from userv0122.oracle.com (userv0122.oracle.com [156.151.31.75]) by userp3020.oracle.com with ESMTP id 31uur9r6ep-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK) for ; Thu, 25 Jun 2020 23:30:48 +0000 Received: from abhmp0002.oracle.com (abhmp0002.oracle.com [141.146.116.8]) by userv0122.oracle.com (8.14.4/8.14.4) with ESMTP id 05PNUm9g008524 for ; Thu, 25 Jun 2020 23:30:48 GMT Received: from localhost.localdomain (/67.1.142.158) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Thu, 25 Jun 2020 23:30:48 +0000 From: Allison Collins To: linux-xfs@vger.kernel.org Subject: [PATCH v10 20/25] xfs: Simplify xfs_attr_leaf_addname Date: Thu, 25 Jun 2020 16:30:13 -0700 Message-Id: <20200625233018.14585-21-allison.henderson@oracle.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200625233018.14585-1-allison.henderson@oracle.com> References: <20200625233018.14585-1-allison.henderson@oracle.com> X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9663 signatures=668680 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 bulkscore=0 spamscore=0 malwarescore=0 suspectscore=1 mlxlogscore=999 adultscore=0 phishscore=0 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2004280000 definitions=main-2006250136 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9663 signatures=668680 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 mlxscore=0 mlxlogscore=999 cotscore=-2147483648 adultscore=0 bulkscore=0 spamscore=0 phishscore=0 suspectscore=1 priorityscore=1501 lowpriorityscore=0 clxscore=1015 impostorscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2004280000 definitions=main-2006250136 Sender: linux-xfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-xfs@vger.kernel.org Invert the rename logic in xfs_attr_leaf_addname to simplify the delayed attr logic later. Signed-off-by: Allison Collins Reviewed-by: Brian Foster --- fs/xfs/libxfs/xfs_attr.c | 107 ++++++++++++++++++++++++----------------------- 1 file changed, 55 insertions(+), 52 deletions(-) diff --git a/fs/xfs/libxfs/xfs_attr.c b/fs/xfs/libxfs/xfs_attr.c index f993af5..ca1e851 100644 --- a/fs/xfs/libxfs/xfs_attr.c +++ b/fs/xfs/libxfs/xfs_attr.c @@ -695,68 +695,71 @@ xfs_attr_leaf_addname( return error; } - /* - * If this is an atomic rename operation, we must "flip" the - * incomplete flags on the "new" and "old" attribute/value pairs - * so that one disappears and one appears atomically. Then we - * must remove the "old" attribute/value pair. - */ - if (args->op_flags & XFS_DA_OP_RENAME) { + if (!(args->op_flags & XFS_DA_OP_RENAME)) { /* - * In a separate transaction, set the incomplete flag on the - * "old" attr and clear the incomplete flag on the "new" attr. - */ - error = xfs_attr3_leaf_flipflags(args); - if (error) - return error; - /* - * Commit the flag value change and start the next trans in - * series. + * Added a "remote" value, just clear the incomplete flag. */ - error = xfs_trans_roll_inode(&args->trans, args->dp); - if (error) - return error; + if (args->rmtblkno > 0) + error = xfs_attr3_leaf_clearflag(args); - /* - * Dismantle the "old" attribute/value pair by removing - * a "remote" value (if it exists). - */ - xfs_attr_restore_rmt_blk(args); + return error; + } - if (args->rmtblkno) { - error = xfs_attr_rmtval_invalidate(args); - if (error) - return error; + /* + * If this is an atomic rename operation, we must "flip" the incomplete + * flags on the "new" and "old" attribute/value pairs so that one + * disappears and one appears atomically. Then we must remove the "old" + * attribute/value pair. + * + * In a separate transaction, set the incomplete flag on the "old" attr + * and clear the incomplete flag on the "new" attr. + */ - error = xfs_attr_rmtval_remove(args); - if (error) - return error; - } + error = xfs_attr3_leaf_flipflags(args); + if (error) + return error; + /* + * Commit the flag value change and start the next trans in series. + */ + error = xfs_trans_roll_inode(&args->trans, args->dp); + if (error) + return error; - /* - * Read in the block containing the "old" attr, then - * remove the "old" attr from that block (neat, huh!) - */ - error = xfs_attr3_leaf_read(args->trans, args->dp, args->blkno, - &bp); + /* + * Dismantle the "old" attribute/value pair by removing a "remote" value + * (if it exists). + */ + xfs_attr_restore_rmt_blk(args); + + if (args->rmtblkno) { + error = xfs_attr_rmtval_invalidate(args); if (error) return error; - xfs_attr3_leaf_remove(bp, args); - - /* - * If the result is small enough, shrink it all into the inode. - */ - 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 */ - } else if (args->rmtblkno > 0) { - /* - * Added a "remote" value, just clear the incomplete flag. - */ - error = xfs_attr3_leaf_clearflag(args); + error = xfs_attr_rmtval_remove(args); + if (error) + return error; } + + /* + * Read in the block containing the "old" attr, then remove the "old" + * attr from that block (neat, huh!) + */ + error = xfs_attr3_leaf_read(args->trans, args->dp, args->blkno, + &bp); + if (error) + return error; + + xfs_attr3_leaf_remove(bp, args); + + /* + * If the result is small enough, shrink it all into the inode. + */ + 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 */ + return error; }