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path: root/drivers/scsi/libsas/sas_discover.c
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Diffstat (limited to 'drivers/scsi/libsas/sas_discover.c')
-rw-r--r--drivers/scsi/libsas/sas_discover.c29
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/scsi/libsas/sas_discover.c b/drivers/scsi/libsas/sas_discover.c
index 72fdb2e5d047..8c6afe724944 100644
--- a/drivers/scsi/libsas/sas_discover.c
+++ b/drivers/scsi/libsas/sas_discover.c
@@ -360,6 +360,33 @@ static void sas_destruct_ports(struct asd_sas_port *port)
}
}
+static bool sas_abort_cmd(struct request *req, void *data)
+{
+ struct scsi_cmnd *cmd = blk_mq_rq_to_pdu(req);
+ struct domain_device *dev = data;
+
+ if (dev == cmd_to_domain_dev(cmd))
+ blk_abort_request(req);
+ return true;
+}
+
+static void sas_abort_device_scsi_cmds(struct domain_device *dev)
+{
+ struct sas_ha_struct *sas_ha = dev->port->ha;
+ struct Scsi_Host *shost = sas_ha->core.shost;
+
+ if (dev_is_expander(dev->dev_type))
+ return;
+
+ /*
+ * For removed device with active IOs, the user space applications have
+ * to spend very long time waiting for the timeout. This is not
+ * necessary because a removed device will not return the IOs.
+ * Abort the inflight IOs here so that EH can be quickly kicked in.
+ */
+ blk_mq_tagset_busy_iter(&shost->tag_set, sas_abort_cmd, dev);
+}
+
void sas_unregister_dev(struct asd_sas_port *port, struct domain_device *dev)
{
if (!test_bit(SAS_DEV_DESTROY, &dev->state) &&
@@ -372,6 +399,8 @@ void sas_unregister_dev(struct asd_sas_port *port, struct domain_device *dev)
}
if (!test_and_set_bit(SAS_DEV_DESTROY, &dev->state)) {
+ if (test_bit(SAS_DEV_GONE, &dev->state))
+ sas_abort_device_scsi_cmds(dev);
sas_rphy_unlink(dev->rphy);
list_move_tail(&dev->disco_list_node, &port->destroy_list);
}