From e97fcd95a4778a8caf1980c6c72fdf68185a0838 Mon Sep 17 00:00:00 2001
From: Mark Fasheh <mfasheh@suse.com>
Date: Tue, 18 Nov 2008 17:15:24 -0800
Subject: [PATCH] jbd2: Add BH_JBDPrivateStart
Add this so that file systems using JBD2 can safely allocate unused b_state
bits.
In this case, we add it so that Ocfs2 can define a single bit for tracking
the validation state of a buffer.
Acked-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
---
include/linux/jbd2.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h
index c7d106ef22e..f3664574548 100644
--- a/include/linux/jbd2.h
+++ b/include/linux/jbd2.h
@@ -329,6 +329,7 @@ enum jbd_state_bits {
BH_State, /* Pins most journal_head state */
BH_JournalHead, /* Pins bh->b_private and jh->b_bh */
BH_Unshadow, /* Dummy bit, for BJ_Shadow wakeup filtering */
+ BH_JBDPrivateStart, /* First bit available for private use by FS */
};
BUFFER_FNS(JBD, jbd)
--
2.41.3