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authorDave Chinner <david@fromorbit.com>2008-11-28 14:23:37 +1100
committerNiv Sardi <xaiki@sgi.com>2008-12-01 11:37:10 +1100
commit26c5295135d10fc90cbf160adfda392d91f58279 (patch)
tree783ec22542fc70bd2bcab6c111205dc62b214e71 /fs/xfs
parent207fcfad58482c7c9f92939a1f6df9f7e8873a34 (diff)
[XFS] remove i_gen from incore inode
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 <david@fromorbit.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Niv Sardi <xaiki@sgi.com>
Diffstat (limited to 'fs/xfs')
-rw-r--r--fs/xfs/xfs_inode.h1
-rw-r--r--fs/xfs/xfs_rename.c12
-rw-r--r--fs/xfs/xfs_vnodeops.c29
3 files changed, 4 insertions, 38 deletions
diff --git a/fs/xfs/xfs_inode.h b/fs/xfs/xfs_inode.h
index 7f007ef4bbb..ea691c738f2 100644
--- a/fs/xfs/xfs_inode.h
+++ b/fs/xfs/xfs_inode.h
@@ -261,7 +261,6 @@ 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 d700dacdb10..02f0e8f53a9 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 f26b038004a..b29a0eb9c0f 100644
--- a/fs/xfs/xfs_vnodeops.c
+++ b/fs/xfs/xfs_vnodeops.c
@@ -1599,8 +1599,6 @@ 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
@@ -1967,13 +1965,6 @@ 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 "..".
@@ -1991,8 +1982,8 @@ 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);
}
@@ -2152,7 +2143,6 @@ 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);
@@ -2329,18 +2319,10 @@ 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;
@@ -2627,13 +2609,6 @@ 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.