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dlm: use wait_event_timeout 

Use wait_event_timeout to avoid using a timer
directly.

Signed-off-by: David Teigland <teigland@redhat.com>
This commit is contained in:
David Teigland 2012-06-05 11:23:21 -05:00
parent 05c32f47bf
commit 6d768177c2
1 changed files with 11 additions and 18 deletions
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29
fs/dlm/recover.c
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@ -36,30 +36,23 @@
* (LS_RECOVERY_STOP set due to failure of a node in ls_nodes). When another
* function thinks it could have completed the waited-on task, they should wake
* up ls_wait_general to get an immediate response rather than waiting for the
* timer to detect the result. A timer wakes us up periodically while waiting
* to see if we should abort due to a node failure. This should only be called
* by the dlm_recoverd thread.
* timeout. This uses a timeout so it can check periodically if the wait
* should abort due to node failure (which doesn't cause a wake_up).
* This should only be called by the dlm_recoverd thread.
*/
static void dlm_wait_timer_fn(unsigned long data)
{
struct dlm_ls *ls = (struct dlm_ls *) data;
mod_timer(&ls->ls_timer, jiffies + (dlm_config.ci_recover_timer * HZ));
wake_up(&ls->ls_wait_general);
}
int dlm_wait_function(struct dlm_ls *ls, int (*testfn) (struct dlm_ls *ls))
{
int error = 0;
int rv;
init_timer(&ls->ls_timer);
ls->ls_timer.function = dlm_wait_timer_fn;
ls->ls_timer.data = (long) ls;
ls->ls_timer.expires = jiffies + (dlm_config.ci_recover_timer * HZ);
add_timer(&ls->ls_timer);
wait_event(ls->ls_wait_general, testfn(ls) || dlm_recovery_stopped(ls));
del_timer_sync(&ls->ls_timer);
while (1) {
rv = wait_event_timeout(ls->ls_wait_general,
testfn(ls) || dlm_recovery_stopped(ls),
dlm_config.ci_recover_timer * HZ);
if (rv)
break;
}
if (dlm_recovery_stopped(ls)) {
log_debug(ls, "dlm_wait_function aborted");