Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965180AbcLURFq (ORCPT ); Wed, 21 Dec 2016 12:05:46 -0500 Received: from mx1.redhat.com ([209.132.183.28]:46308 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S964931AbcLUREO (ORCPT ); Wed, 21 Dec 2016 12:04:14 -0500 From: Jeff Layton To: linux-fsdevel@vger.kernel.org Cc: linux-kernel@vger.kernel.org, linux-nfs@vger.kernel.org, linux-ext4@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-xfs@vger.kernel.org Subject: [RFC PATCH v1 27/30] xfs: avoid setting XFS_ILOG_CORE if i_version doesn't need incrementing Date: Wed, 21 Dec 2016 12:03:44 -0500 Message-Id: <1482339827-7882-28-git-send-email-jlayton@redhat.com> In-Reply-To: <1482339827-7882-1-git-send-email-jlayton@redhat.com> References: <1482339827-7882-1-git-send-email-jlayton@redhat.com> X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.29]); Wed, 21 Dec 2016 17:04:14 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1357 Lines: 36 We do go ahead and increment it though if XFS_ILOG_CORE is already set when we get to this point. Signed-off-by: Jeff Layton --- fs/xfs/xfs_trans_inode.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/fs/xfs/xfs_trans_inode.c b/fs/xfs/xfs_trans_inode.c index 844c08886170..fac422da0bbe 100644 --- a/fs/xfs/xfs_trans_inode.c +++ b/fs/xfs/xfs_trans_inode.c @@ -110,15 +110,15 @@ xfs_trans_log_inode( /* * First time we log the inode in a transaction, bump the inode change - * counter if it is configured for this to occur. We don't use - * inode_inc_version() because there is no need for extra locking around - * i_version as we already hold the inode locked exclusively for - * metadata modification. + * counter if it is configured for this to occur. While we hold the + * inode locked exclusively for metadata modification, we still use + * inode_inc_iversion as it allows us to avoid setting XFS_ILOG_CORE + * if the version hasn't been queried since the last bump. */ if (!(ip->i_itemp->ili_item.li_desc->lid_flags & XFS_LID_DIRTY) && IS_I_VERSION(VFS_I(ip))) { - inode_inc_iversion_locked(VFS_I(ip)); - flags |= XFS_ILOG_CORE; + if (inode_inc_iversion(VFS_I(ip), flags & XFS_ILOG_CORE)) + flags |= XFS_ILOG_CORE; } tp->t_flags |= XFS_TRANS_DIRTY; -- 2.7.4