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dlm: delayed reply message warning

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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>
This commit is contained in:
David Teigland
2011-03-28 14:17:26 -05:00
parent 4bcad6c1ef
commit c6ff669bac
6 changed files with 108 additions and 11 deletions
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2
fs/dlm/dlm_internal.h
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@@ -245,6 +245,7 @@ struct dlm_lkb {
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 dlm_lkb {
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];