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-rw-r--r--include/linux/jbd2.h15
1 files changed, 15 insertions, 0 deletions
diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h
index f3664574548..ab8cef130c2 100644
--- a/include/linux/jbd2.h
+++ b/include/linux/jbd2.h
@@ -638,6 +638,11 @@ 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;
@@ -939,8 +944,18 @@ struct journal_s
struct buffer_head **j_wbuf;
int j_wbufsize;
+ /*
+ * this is the pid of hte 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 disk. [j_state_lock]
+ */
+ u64 j_average_commit_time;
+
/* This function is called when a transaction is closed */
void (*j_commit_callback)(journal_t *,
transaction_t *);