ocfs2: Use BH_JBDPrivateStart instead of BH_Unshadow

This is safer. We no longer have to worry about tracking changes to
jbd_state_bits.

Signed-off-by: Mark Fasheh <mfasheh@suse.com>

diff --git a/fs/ocfs2/buffer_head_io.c b/fs/ocfs2/buffer_head_io.c
index 0e9eed0..15c8e6d 100644 (file)
--- a/fs/ocfs2/buffer_head_io.c
+++ b/fs/ocfs2/buffer_head_io.c
@@ -42,11 +42,10 @@
 /*
  * Bits on bh->b_state used by ocfs2.
  *
- * These MUST be after the JBD2 bits.  Currently BH_Unshadow is the last
- * JBD2 bit.
+ * These MUST be after the JBD2 bits.  Hence, we use BH_JBDPrivateStart.
  */
 enum ocfs2_state_bits {
-       BH_NeedsValidate = BH_Unshadow + 1,
+       BH_NeedsValidate = BH_JBDPrivateStart,
 };
 
 /* Expand the magic b_state functions */