src/patches/suse-2.6.27.31/patches.suse/dlm-add-time-stamp-of-blocking-callback.patch

   1 From: David Teigland <teigland@redhat.com>
   2 commit e3a84ad495d1fddb542e0922160f0194a1361950
   3 Author: David Teigland <teigland@redhat.com>
   4 Date:   Tue Dec 9 14:47:29 2008 -0600
   5 Subject: dlm: add time stamp of blocking callback
   6
   7     Record the time the latest blocking callback was queued for
   8     a lock.  This will be used for debugging in combination with
   9     lock queue timestamp changes in the previous patch.
  10
  11 Signed-off-by: David Teigland <teigland@redhat.com>
  12 Signed-off-by: Coly Li <coly.li@suse.de>
  13
  14 diff --git a/fs/dlm/dlm_internal.h b/fs/dlm/dlm_internal.h
  15 index e69135c..0c48829 100644
  16 --- a/fs/dlm/dlm_internal.h
  17 +++ b/fs/dlm/dlm_internal.h
  18 @@ -245,6 +245,7 @@ struct dlm_lkb {
  19         struct list_head        lkb_astqueue;   /* need ast to be sent */
  20         struct list_head        lkb_ownqueue;   /* list of locks for a process */
  21         struct list_head        lkb_time_list;
  22 +       ktime_t                 lkb_time_bast;  /* for debugging */
  23         ktime_t                 lkb_timestamp;
  24         unsigned long           lkb_timeout_cs;
  25
  26 diff --git a/fs/dlm/lock.c b/fs/dlm/lock.c
  27 index dfc57ae..6cfe65b 100644
  28 --- a/fs/dlm/lock.c
  29 +++ b/fs/dlm/lock.c
  30 @@ -318,6 +318,8 @@ static inline void queue_cast_overlap(struct dlm_rsb *r, struct dlm_lkb *lkb)
  31
  32  static void queue_bast(struct dlm_rsb *r, struct dlm_lkb *lkb, int rqmode)
  33  {
  34 +       lkb->lkb_time_bast = ktime_get();
  35 +
  36         if (is_master_copy(lkb))
  37                 send_bast(r, lkb, rqmode);
  38         else