linux-kernel - [PATCH] jbd: change the field "b_cow_tid" of struct journal_head from type unsigned to tid

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Message-ID: <4E2D6961.9000909@gmail.com>
Date:	Mon, 25 Jul 2011 21:02:25 +0800
From:	Wang Sheng-Hui <shhuiw@...il.com>
To:	Andrew Morton <akpm@...ux-foundation.org>, Jan Kara <jack@...e.cz>,
	linux-ext4@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] jbd: change the field "b_cow_tid" of struct journal_head
 from type unsigned to tid_t

The patch is against 3.0

In the definition of struct journal_head, the comment for
the field "unsigned b_cow_tid" says the field tracks the
last transaction id in which this buffer has been cowed.

In the header part of file journal-head.h, it defines
   typedef unsigned int  tid_t;
We should use type tid_t to define transaction id fields.

Change the field "b_cow_tid" of struct journal_head from
type unsigned to tid_t.

Signed-off-by: Wang Sheng-Hui <shhuiw@...il.com>
---
 include/linux/journal-head.h |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/include/linux/journal-head.h b/include/linux/journal-head.h
index 44e95d0..423cb6d 100644
--- a/include/linux/journal-head.h
+++ b/include/linux/journal-head.h
@@ -45,7 +45,7 @@ struct journal_head {
 	 * has been cowed
 	 * [jbd_lock_bh_state()]
 	 */
-	unsigned b_cow_tid;
+	tid_t b_cow_tid;
 
 	/*
 	 * Copy of the buffer data frozen for writing to the log.
-- 
1.7.1

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