ext4, jbd2: Add barriers for file systems with exernal journals

[safe/jmp/linux-2.6] / include / linux / jbd2.h

diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h
index cc02393..638ce45 100644 (file)
--- a/include/linux/jbd2.h
+++ b/include/linux/jbd2.h
@@ -464,9 +464,9 @@ struct handle_s
  */
 struct transaction_chp_stats_s {
        unsigned long           cs_chp_time;
-       unsigned long           cs_forced_to_close;
-       unsigned long           cs_written;
-       unsigned long           cs_dropped;
+       __u32                   cs_forced_to_close;
+       __u32                   cs_written;
+       __u32                   cs_dropped;
 };
 
 /* The transaction_t type is the guts of the journaling mechanism.  It
@@ -652,7 +652,8 @@ struct transaction_s
         * This transaction is being forced and some process is
         * waiting for it to finish.
         */
-       int t_synchronous_commit:1;
+       unsigned int t_synchronous_commit:1;
+       unsigned int t_flushed_data_blocks:1;
 
        /*
         * For use by the filesystem to store fs-specific data
@@ -668,23 +669,16 @@ struct transaction_run_stats_s {
        unsigned long           rs_flushing;
        unsigned long           rs_logging;
 
-       unsigned long           rs_handle_count;
-       unsigned long           rs_blocks;
-       unsigned long           rs_blocks_logged;
+       __u32                   rs_handle_count;
+       __u32                   rs_blocks;
+       __u32                   rs_blocks_logged;
 };
 
 struct transaction_stats_s {
-       int                     ts_type;
        unsigned long           ts_tid;
-       union {
-               struct transaction_run_stats_s run;
-               struct transaction_chp_stats_s chp;
-       } u;
+       struct transaction_run_stats_s run;
 };
 
-#define JBD2_STATS_RUN         1
-#define JBD2_STATS_CHECKPOINT  2
-
 static inline unsigned long
 jbd2_time_diff(unsigned long start, unsigned long end)
 {
@@ -988,12 +982,6 @@ struct journal_s
        /*
         * Journal statistics
         */
-       struct transaction_stats_s *j_history;
-       int                     j_history_max;
-       int                     j_history_cur;
-       /*
-        * Protect the transactions statistics history
-        */
        spinlock_t              j_history_lock;
        struct proc_dir_entry   *j_proc_entry;
        struct transaction_stats_s j_stats;
@@ -1315,6 +1303,12 @@ extern int jbd_blocks_per_page(struct inode *inode);
 #define BUFFER_TRACE2(bh, bh2, info)   do {} while (0)
 #define JBUFFER_TRACE(jh, info)        do {} while (0)
 
+/* 
+ * jbd2_dev_to_name is a utility function used by the jbd2 and ext4 
+ * tracing infrastructure to map a dev_t to a device name.
+ */
+extern const char *jbd2_dev_to_name(dev_t device);
+
 #endif /* __KERNEL__ */
 
 #endif /* _LINUX_JBD2_H */