writeback: send work item to queue_io, move_expired_inodes

Instead of sending ->older_than_this to queue_io() and
move_expired_inodes(), send the entire wb_writeback_work
structure.  There are other fields of a work item that are
useful in these routines and in tracepoints.

Acked-by: Jan Kara <jack@suse.cz>
Signed-off-by: Curt Wohlgemuth <curtw@google.com>
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/include/trace/events/writeback.h b/include/trace/events/writeback.h
index 0ce9f06f58c2..1261db3916cc 100644
--- a/include/trace/events/writeback.h
+++ b/include/trace/events/writeback.h
@@ -157,9 +157,9 @@ DEFINE_WBC_EVENT(wbc_writepage);
 
 TRACE_EVENT(writeback_queue_io,
         TP_PROTO(struct bdi_writeback *wb,
-                 unsigned long *older_than_this,
+                 struct wb_writeback_work *work,
                  int moved),
-        TP_ARGS(wb, older_than_this, moved),
+        TP_ARGS(wb, work, moved),
         TP_STRUCT__entry(
                 __array(char,           name, 32)
                 __field(unsigned long,  older)
@@ -167,6 +167,7 @@ TRACE_EVENT(writeback_queue_io,
                 __field(int,            moved)
         ),
         TP_fast_assign(
+                unsigned long *older_than_this = work->older_than_this;
                 strncpy(__entry->name, dev_name(wb->bdi->dev), 32);
                 __entry->older  = older_than_this ?  *older_than_this : 0;
                 __entry->age    = older_than_this ?