Avoid that srpt_close_session() waits if it doesn't have to wait.
Additionally, increase the time during which srpt_close_session()
waits until closing a session has finished. This makes it easier
to detect session shutdown bugs.
Signed-off-by: Bart Van Assche <bart.vanassche@xxxxxxxxxxx>
Cc: Christoph Hellwig <hch@xxxxxx>
---
drivers/infiniband/ulp/srpt/ib_srpt.c | 31 ++++++++++++++++---------------
1 file changed, 16 insertions(+), 15 deletions(-)
diff --git a/drivers/infiniband/ulp/srpt/ib_srpt.c b/drivers/infiniband/ulp/srpt/ib_srpt.c
index 0ff4ed6..1857d17 100644
--- a/drivers/infiniband/ulp/srpt/ib_srpt.c
+++ b/drivers/infiniband/ulp/srpt/ib_srpt.c
@@ -1981,8 +1981,8 @@ static void srpt_release_channel_work(struct work_struct *w)
struct se_session *se_sess;
ch = container_of(w, struct srpt_rdma_ch, release_work);
- pr_debug("ch = %p; ch->sess = %p; release_done = %p\n", ch, ch->sess,
- ch->release_done);
+ pr_debug("%s: %s-%d; release_done = %p\n", __func__, ch->sess_name,
+ ch->qp->qp_num, ch->release_done);
sdev = ch->sport->sdev;
BUG_ON(!sdev);
@@ -2006,11 +2006,10 @@ static void srpt_release_channel_work(struct work_struct *w)
ch->rsp_size, DMA_TO_DEVICE);
spin_lock_irq(&sdev->spinlock);
- list_del(&ch->list);
- spin_unlock_irq(&sdev->spinlock);
-
+ list_del_init(&ch->list);
if (ch->release_done)
complete(ch->release_done);
+ spin_unlock_irq(&sdev->spinlock);
wake_up(&sdev->ch_releaseQ);
@@ -3033,24 +3032,26 @@ static void srpt_release_cmd(struct se_cmd *se_cmd)
static void srpt_close_session(struct se_session *se_sess)
{
DECLARE_COMPLETION_ONSTACK(release_done);
- struct srpt_rdma_ch *ch;
- struct srpt_device *sdev;
- unsigned long res;
-
- ch = se_sess->fabric_sess_ptr;
- WARN_ON(ch->sess != se_sess);
+ struct srpt_rdma_ch *ch = se_sess->fabric_sess_ptr;
+ struct srpt_device *sdev = ch->sport->sdev;
+ bool wait;
- pr_debug("ch %p state %d\n", ch, ch->state);
+ pr_debug("ch %s-%d state %d\n", ch->sess_name, ch->qp->qp_num,
+ ch->state);
- sdev = ch->sport->sdev;
spin_lock_irq(&sdev->spinlock);
BUG_ON(ch->release_done);
ch->release_done = &release_done;
+ wait = !list_empty(&ch->list);
__srpt_close_ch(ch);
spin_unlock_irq(&sdev->spinlock);
- res = wait_for_completion_timeout(&release_done, 60 * HZ);
- WARN_ON(res == 0);
+ if (!wait)
+ return;
+
+ while (wait_for_completion_timeout(&release_done, 180 * HZ) == 0)
+ pr_info("%s(%s-%d state %d): still waiting ...\n", __func__,
+ ch->sess_name, ch->qp->qp_num, ch->state);
}
/**
--
2.1.4
--
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