Introduce state to manage the lifecycle of stor device. This would be the
basis for managing the references on the stor object.
Signed-off-by: K. Y. Srinivasan <kys@xxxxxxxxxxxxx>
Signed-off-by: Haiyang Zhang <haiyangz@xxxxxxxxxxxxx>
---
drivers/staging/hv/hyperv_storage.h | 2 +-
drivers/staging/hv/storvsc.c | 3 ++-
2 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/staging/hv/hyperv_storage.h b/drivers/staging/hv/hyperv_storage.h
index a224413..d93bf93 100644
--- a/drivers/staging/hv/hyperv_storage.h
+++ b/drivers/staging/hv/hyperv_storage.h
@@ -266,7 +266,7 @@ struct storvsc_device {
/* 0 indicates the device is being destroyed */
atomic_t ref_count;
-
+ bool destroy;
bool drain_notify;
atomic_t num_outstanding_req;
diff --git a/drivers/staging/hv/storvsc.c b/drivers/staging/hv/storvsc.c
index 48bd8da..357b08a 100644
--- a/drivers/staging/hv/storvsc.c
+++ b/drivers/staging/hv/storvsc.c
@@ -43,7 +43,7 @@ static inline struct storvsc_device *alloc_stor_device(struct hv_device *device)
/* Set to 2 to allow both inbound and outbound traffics */
/* (ie get_out_stor_device() and get_in_stor_device()) to proceed. */
atomic_set(&stor_device->ref_count, 2);
-
+ stor_device->destroy = false;
init_waitqueue_head(&stor_device->waiting_to_drain);
stor_device->device = device;
device->ext = stor_device;
@@ -401,6 +401,7 @@ int storvsc_dev_remove(struct hv_device *device)
struct storvsc_device *stor_device;
stor_device = release_stor_device(device);
+ stor_device->destroy = true;
/*
* At this point, all outbound traffic should be disable. We
--
1.7.4.1
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