1 files changed, 11 insertions, 0 deletions

diff --git a/fs/ocfs2/journal.h b/fs/ocfs2/journal.h
index 0a992737dcaf..0b479bab3671 100644
--- a/fs/ocfs2/journal.h
+++ b/fs/ocfs2/journal.h
@@ -258,6 +258,17 @@ handle_t		    *ocfs2_start_trans(struct ocfs2_super *osb,
 int                          ocfs2_commit_trans(struct ocfs2_super *osb,
                                                 handle_t *handle);
 int                          ocfs2_extend_trans(handle_t *handle, int nblocks);
+int                          ocfs2_allocate_extend_trans(handle_t *handle,
+                                                int thresh);
+
+/*
+ * Define an arbitrary limit for the amount of data we will anticipate
+ * writing to any given transaction.  For unbounded transactions such as
+ * fallocate(2) we can write more than this, but we always
+ * start off at the maximum transaction size and grow the transaction
+ * optimistically as we go.
+ */
+#define OCFS2_MAX_TRANS_DATA    64U
 
 /*
  * Create access is for when we get a newly created buffer and we're