Merge commit 'v2.6.29-rc1' into perfcounters/core

Conflicts:
	include/linux/kernel_stat.h

1 files changed, 15 insertions, 0 deletions

diff --git a/include/linux/jbd.h b/include/linux/jbd.h
index 346e2b80be7d..6384b19efe64 100644
--- a/include/linux/jbd.h
+++ b/include/linux/jbd.h
@@ -543,6 +543,11 @@ struct transaction_s
 	unsigned long		t_expires;
 
 	/*
+	 * When this transaction started, in nanoseconds [no locking]
+	 */
+	ktime_t			t_start_time;
+
+	/*
 	 * How many handles used this transaction? [t_handle_lock]
 	 */
 	int t_handle_count;
@@ -798,9 +803,19 @@ struct journal_s
 	struct buffer_head	**j_wbuf;
 	int			j_wbufsize;
 
+	/*
+	 * this is the pid of the last person to run a synchronous operation
+	 * through the journal.
+	 */
 	pid_t			j_last_sync_writer;
 
 	/*
+	 * the average amount of time in nanoseconds it takes to commit a
+	 * transaction to the disk.  [j_state_lock]
+	 */
+	u64			j_average_commit_time;
+
+	/*
 	 * An opaque pointer to fs-private information.  ext3 puts its
 	 * superblock pointer here
 	 */