dlm: delayed reply message warning
Add an option (disabled by default) to print a warning message
when a lock has been waiting a configurable amount of time for
a reply message from another node. This is mainly for debugging.
Signed-off-by: David Teigland <teigland@redhat.com>
diff --git a/fs/dlm/dlm_internal.h b/fs/dlm/dlm_internal.h
index b942049..6a92478 100644
--- a/fs/dlm/dlm_internal.h
+++ b/fs/dlm/dlm_internal.h
@@ -245,6 +245,7 @@
int8_t lkb_wait_type; /* type of reply waiting for */
int8_t lkb_wait_count;
+ int lkb_wait_nodeid; /* for debugging */
struct list_head lkb_idtbl_list; /* lockspace lkbtbl */
struct list_head lkb_statequeue; /* rsb g/c/w list */
@@ -254,6 +255,7 @@
struct list_head lkb_ownqueue; /* list of locks for a process */
struct list_head lkb_time_list;
ktime_t lkb_timestamp;
+ ktime_t lkb_wait_time;
unsigned long lkb_timeout_cs;
struct dlm_callback lkb_callbacks[DLM_CALLBACKS_SIZE];