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staging: lustre: use explicit poll loop in ptlrpc_service_unlink_rqbd

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Rather an using l_wait_event(), use wait_event_idle_timeout()
with an explicit loop so it is easier to see what is happening.

Reviewed-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: NeilBrown <neilb@suse.com>
Reviewed-by: Patrick Farrell <paf@cray.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
NeilBrown 2018-02-13 10:47:59 +11:00 committed by Greg Kroah-Hartman
parent fdeb5f9a51
commit 0a0e5afcb2
1 changed files with 8 additions and 7 deletions
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15
drivers/staging/lustre/lustre/ptlrpc/service.c
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@ -2618,7 +2618,7 @@ ptlrpc_service_unlink_rqbd(struct ptlrpc_service *svc)
{
struct ptlrpc_service_part *svcpt;
struct ptlrpc_request_buffer_desc *rqbd;
struct l_wait_info lwi;
int cnt;
int rc;
int i;
@ -2658,12 +2658,13 @@ ptlrpc_service_unlink_rqbd(struct ptlrpc_service *svc)
* the HUGE timeout lets us CWARN for visibility
* of sluggish LNDs
*/
lwi = LWI_TIMEOUT_INTERVAL(
LONG_UNLINK * HZ,
HZ, NULL, NULL);
rc = l_wait_event(svcpt->scp_waitq,
svcpt->scp_nrqbds_posted == 0, &lwi);
if (rc == -ETIMEDOUT) {
cnt = 0;
while (cnt < LONG_UNLINK &&
(rc = wait_event_idle_timeout(svcpt->scp_waitq,
svcpt->scp_nrqbds_posted == 0,
HZ)) == 0)
cnt ++;
if (rc == 0) {
CWARN("Service %s waiting for request buffers\n",
svcpt->scp_service->srv_name);
}