From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: with ECARTIS (v1.0.0; list xfs); Tue, 19 Aug 2008 06:16:06 -0700 (PDT) Received: from cuda.sgi.com ([192.48.176.15]) by oss.sgi.com (8.12.11.20060308/8.12.11/SuSE Linux 0.7) with ESMTP id m7JDFVT6022752 for ; Tue, 19 Aug 2008 06:15:32 -0700 Received: from ipmail05.adl2.internode.on.net (localhost [127.0.0.1]) by cuda.sgi.com (Spam Firewall) with ESMTP id 36DCB1BC6722 for ; Tue, 19 Aug 2008 06:16:51 -0700 (PDT) Received: from ipmail05.adl2.internode.on.net (ipmail05.adl2.internode.on.net [203.16.214.145]) by cuda.sgi.com with ESMTP id qOFaMHIOokhBcZUn for ; Tue, 19 Aug 2008 06:16:51 -0700 (PDT) Received: from dave by disturbed with local (Exim 4.69) (envelope-from ) id 1KVR4n-0008A2-0s for xfs@oss.sgi.com; Tue, 19 Aug 2008 23:16:45 +1000 From: Dave Chinner Subject: [PATCH 01/28] XFS: remove i_gen from incore inode Date: Tue, 19 Aug 2008 23:16:17 +1000 Message-Id: <1219151804-30749-2-git-send-email-david@fromorbit.com> In-Reply-To: <1219151804-30749-1-git-send-email-david@fromorbit.com> References: <1219151804-30749-1-git-send-email-david@fromorbit.com> Sender: xfs-bounce@oss.sgi.com Errors-to: xfs-bounce@oss.sgi.com List-Id: xfs To: xfs@oss.sgi.com i_gen is incremented in directory operations when the directory is changed. It is never read or otherwise used so it should be removed to help reduce the size of the struct xfs_inode. The patch also removes a duplicate logging of the directory inode core. We only need to do this once per transaction so kill the one associated with the i_gen increment. Signed-off-by: Dave Chinner --- fs/xfs/xfs_inode.h | 1 - fs/xfs/xfs_rename.c | 12 ++---------- fs/xfs/xfs_vnodeops.c | 29 ++--------------------------- 3 files changed, 4 insertions(+), 38 deletions(-) diff --git a/fs/xfs/xfs_inode.h b/fs/xfs/xfs_inode.h index 1420c49..9559e0b 100644 --- a/fs/xfs/xfs_inode.h +++ b/fs/xfs/xfs_inode.h @@ -230,7 +230,6 @@ typedef struct xfs_inode { unsigned short i_flags; /* see defined flags below */ unsigned char i_update_core; /* timestamps/size is dirty */ unsigned char i_update_size; /* di_size field is dirty */ - unsigned int i_gen; /* generation count */ unsigned int i_delayed_blks; /* count of delay alloc blks */ xfs_icdinode_t i_d; /* most of ondisk inode */ diff --git a/fs/xfs/xfs_rename.c b/fs/xfs/xfs_rename.c index d700dac..02f0e8f 100644 --- a/fs/xfs/xfs_rename.c +++ b/fs/xfs/xfs_rename.c @@ -367,19 +367,11 @@ xfs_rename( &first_block, &free_list, spaceres); if (error) goto abort_return; - xfs_ichgtime(src_dp, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG); - /* - * Update the generation counts on all the directory inodes - * that we're modifying. - */ - src_dp->i_gen++; + xfs_ichgtime(src_dp, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG); xfs_trans_log_inode(tp, src_dp, XFS_ILOG_CORE); - - if (new_parent) { - target_dp->i_gen++; + if (new_parent) xfs_trans_log_inode(tp, target_dp, XFS_ILOG_CORE); - } /* * If this is a synchronous mount, make sure that the diff --git a/fs/xfs/xfs_vnodeops.c b/fs/xfs/xfs_vnodeops.c index 588bb4a..0a5999f 100644 --- a/fs/xfs/xfs_vnodeops.c +++ b/fs/xfs/xfs_vnodeops.c @@ -1625,8 +1625,6 @@ xfs_create( xfs_trans_set_sync(tp); } - dp->i_gen++; - /* * Attach the dquot(s) to the inodes and modify them incore. * These ids of the inode couldn't have changed since the new @@ -1985,13 +1983,6 @@ xfs_remove( } xfs_ichgtime(dp, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG); - /* - * Bump the in memory generation count on the parent - * directory so that other can know that it has changed. - */ - dp->i_gen++; - xfs_trans_log_inode(tp, dp, XFS_ILOG_CORE); - if (is_dir) { /* * Drop the link from ip's "..". @@ -2009,8 +2000,8 @@ xfs_remove( } else { /* * When removing a non-directory we need to log the parent - * inode here for the i_gen update. For a directory this is - * done implicitly by the xfs_droplink call for the ".." entry. + * inode here. For a directory this is done implicitly + * by the xfs_droplink call for the ".." entry. */ xfs_trans_log_inode(tp, dp, XFS_ILOG_CORE); } @@ -2170,7 +2161,6 @@ xfs_link( if (error) goto abort_return; xfs_ichgtime(tdp, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG); - tdp->i_gen++; xfs_trans_log_inode(tp, tdp, XFS_ILOG_CORE); error = xfs_bumplink(tp, sip); @@ -2347,18 +2337,10 @@ xfs_mkdir( } xfs_ichgtime(dp, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG); - /* - * Bump the in memory version number of the parent directory - * so that other processes accessing it will recognize that - * the directory has changed. - */ - dp->i_gen++; - error = xfs_dir_init(tp, cdp, dp); if (error) goto error2; - cdp->i_gen = 1; error = xfs_bumplink(tp, dp); if (error) goto error2; @@ -2645,13 +2627,6 @@ xfs_symlink( xfs_trans_log_inode(tp, dp, XFS_ILOG_CORE); /* - * Bump the in memory version number of the parent directory - * so that other processes accessing it will recognize that - * the directory has changed. - */ - dp->i_gen++; - - /* * If this is a synchronous mount, make sure that the * symlink transaction goes to disk before returning to * the user. -- 1.5.6