ocfs2: move ip_last_trans to struct ocfs2_caching_info

We have the read side of metadata caching isolated to struct
ocfs2_caching_info, now we need the write side.  This means the journal
functions.  The journal only does a couple of things with struct inode.

This change moves the ip_last_trans field onto struct
ocfs2_caching_info as ci_last_trans.  This field tells the journal
whether a pending journal flush is required.

Signed-off-by: Joel Becker <joel.becker@oracle.com>

1 files changed, 19 insertions, 3 deletions

diff --git a/fs/ocfs2/uptodate.c b/fs/ocfs2/uptodate.c
index 1c829e45101..81c82200b90 100644
--- a/fs/ocfs2/uptodate.c
+++ b/fs/ocfs2/uptodate.c
@@ -118,16 +118,32 @@ void ocfs2_metadata_cache_io_unlock(struct ocfs2_caching_info *ci)
 }
 
 
+static void ocfs2_metadata_cache_reset(struct ocfs2_caching_info *ci,
+				       int clear)
+{
+	ci->ci_flags |= OCFS2_CACHE_FL_INLINE;
+	ci->ci_num_cached = 0;
+
+	if (clear)
+		ci->ci_last_trans = 0;
+}
+
 void ocfs2_metadata_cache_init(struct ocfs2_caching_info *ci,
 			       const struct ocfs2_caching_operations *ops)
 {
 	BUG_ON(!ops);
 
 	ci->ci_ops = ops;
-	ci->ci_flags |= OCFS2_CACHE_FL_INLINE;
-	ci->ci_num_cached = 0;
+	ocfs2_metadata_cache_reset(ci, 1);
+}
+
+void ocfs2_metadata_cache_exit(struct ocfs2_caching_info *ci)
+{
+	ocfs2_metadata_cache_purge(ci);
+	ocfs2_metadata_cache_reset(ci, 1);
 }
 
+
 /* No lock taken here as 'root' is not expected to be visible to other
  * processes. */
 static unsigned int ocfs2_purge_copied_metadata_tree(struct rb_root *root)
@@ -177,7 +193,7 @@ void ocfs2_metadata_cache_purge(struct ocfs2_caching_info *ci)
 	if (tree)
 		root = ci->ci_cache.ci_tree;
 
-	ocfs2_metadata_cache_init(ci, ci->ci_ops);
+	ocfs2_metadata_cache_reset(ci, 0);
 	ocfs2_metadata_cache_unlock(ci);
 
 	purged = ocfs2_purge_copied_metadata_tree(&root);