From: Ye Bin <yebin10@xxxxxxxxxx>
As previous patch introduce 'blocked' sysfs api to set 'host_blockio'.
If 'host_blockio' is true will blocking IO.
Signed-off-by: Ye Bin <yebin10@xxxxxxxxxx>
---
drivers/scsi/scsi_lib.c | 2 ++
include/scsi/scsi_host.h | 5 +++++
2 files changed, 7 insertions(+)
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index b7c569a42aa4..20d618300a46 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -1724,6 +1724,8 @@ static blk_status_t scsi_queue_rq(struct blk_mq_hw_ctx *hctx,
}
ret = BLK_STS_RESOURCE;
+ if (unlikely(scsi_host_blocked(shost)))
+ goto out_put_budget;
if (!scsi_target_queue_ready(shost, sdev))
goto out_put_budget;
if (unlikely(scsi_host_in_recovery(shost))) {
diff --git a/include/scsi/scsi_host.h b/include/scsi/scsi_host.h
index 3e916dbac1cb..9fc30d0c48de 100644
--- a/include/scsi/scsi_host.h
+++ b/include/scsi/scsi_host.h
@@ -747,6 +747,11 @@ static inline int scsi_host_in_recovery(struct Scsi_Host *shost)
shost->tmf_in_progress;
}
+static inline int scsi_host_blocked(struct Scsi_Host *shost)
+{
+ return shost->host_blockio;
+}
+
extern int scsi_queue_work(struct Scsi_Host *, struct work_struct *);
extern void scsi_flush_work(struct Scsi_Host *);
--
2.31.1
