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dlm: record full callback state

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Change how callbacks are recorded for locks.  Previously, information
about multiple callbacks was combined into a couple of variables that
indicated what the end result should be.  In some situations, we
could not tell from this combined state what the exact sequence of
callbacks were, and would end up either delivering the callbacks in
the wrong order, or suppress redundant callbacks incorrectly.  This
new approach records all the data for each callback, leaving no
uncertainty about what needs to be delivered.

Signed-off-by: David Teigland <teigland@redhat.com>
This commit is contained in:
David Teigland
2011-02-21 14:58:21 -06:00
parent 35d34df711
commit 8304d6f24c
8 changed files with 317 additions and 228 deletions
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4
fs/dlm/debug_fs.c
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@@ -257,12 +257,12 @@ static int print_format3_lock(struct seq_file *s, struct dlm_lkb *lkb,
lkb->lkb_status,
lkb->lkb_grmode,
lkb->lkb_rqmode,
lkb->lkb_bastmode,
lkb->lkb_last_bast.mode,
rsb_lookup,
lkb->lkb_wait_type,
lkb->lkb_lvbseq,
(unsigned long long)ktime_to_ns(lkb->lkb_timestamp),
(unsigned long long)ktime_to_ns(lkb->lkb_time_bast));
(unsigned long long)ktime_to_ns(lkb->lkb_last_bast_time));
return rv;
}