Move xen patchset to new version's subdir.

[ipfire-2.x.git] / src / patches / suse-2.6.27.31 / patches.suse / dlm-add-time-stamp-of-blocking-callback.patch

From: David Teigland <teigland@redhat.com>
commit e3a84ad495d1fddb542e0922160f0194a1361950
Author: David Teigland <teigland@redhat.com>
Date:   Tue Dec 9 14:47:29 2008 -0600
Subject: dlm: add time stamp of blocking callback
    
    Record the time the latest blocking callback was queued for
    a lock.  This will be used for debugging in combination with
    lock queue timestamp changes in the previous patch.
    
Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Coly Li <coly.li@suse.de>

diff --git a/fs/dlm/dlm_internal.h b/fs/dlm/dlm_internal.h
index e69135c..0c48829 100644
--- a/fs/dlm/dlm_internal.h
+++ b/fs/dlm/dlm_internal.h
@@ -245,6 +245,7 @@ struct dlm_lkb {
 	struct list_head	lkb_astqueue;	/* need ast to be sent */
 	struct list_head	lkb_ownqueue;	/* list of locks for a process */
 	struct list_head	lkb_time_list;
+	ktime_t			lkb_time_bast;	/* for debugging */
 	ktime_t			lkb_timestamp;
 	unsigned long		lkb_timeout_cs;
 
diff --git a/fs/dlm/lock.c b/fs/dlm/lock.c
index dfc57ae..6cfe65b 100644
--- a/fs/dlm/lock.c
+++ b/fs/dlm/lock.c
@@ -318,6 +318,8 @@ static inline void queue_cast_overlap(struct dlm_rsb *r, struct dlm_lkb *lkb)
 
 static void queue_bast(struct dlm_rsb *r, struct dlm_lkb *lkb, int rqmode)
 {
+	lkb->lkb_time_bast = ktime_get();
+
 	if (is_master_copy(lkb))
 		send_bast(r, lkb, rqmode);
 	else