Messages in this thread Patch in this message | | | From | Jason Yan <> | Subject | [PATCH v5 5/7] scsi: libsas: use flush_workqueue to process disco events synchronously | Date | Fri, 8 Dec 2017 17:42:08 +0800 |
| |
Now we are processing sas event and discover event in different workqueues. It's safe to wait the discover event done in the sas event work. Use flush_workqueue() to insure the disco and revalidate events processed synchronously so that the whole discover and revalidate process will not be interrupted by other events.
Signed-off-by: Jason Yan <yanaijie@huawei.com> CC: John Garry <john.garry@huawei.com> CC: Johannes Thumshirn <jthumshirn@suse.de> CC: Ewan Milne <emilne@redhat.com> CC: Christoph Hellwig <hch@lst.de> CC: Tomas Henzl <thenzl@redhat.com> CC: Dan Williams <dan.j.williams@intel.com> --- drivers/scsi/libsas/sas_port.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/scsi/libsas/sas_port.c b/drivers/scsi/libsas/sas_port.c index 9326628..64722f4 100644 --- a/drivers/scsi/libsas/sas_port.c +++ b/drivers/scsi/libsas/sas_port.c @@ -192,6 +192,7 @@ static void sas_form_port(struct asd_sas_phy *phy) si->dft->lldd_port_formed(phy); sas_discover_event(phy->port, DISCE_DISCOVER_DOMAIN); + flush_workqueue(sas_ha->disco_q); } /** @@ -277,6 +278,9 @@ void sas_porte_broadcast_rcvd(struct work_struct *work) SAS_DPRINTK("broadcast received: %d\n", prim); sas_discover_event(phy->port, DISCE_REVALIDATE_DOMAIN); + + if (phy->port) + flush_workqueue(phy->port->ha->disco_q); } void sas_porte_link_reset_err(struct work_struct *work) -- 2.9.5
| |