[PATCH 080/117] Staging: hv: storvsc: Introduce state to manage the lifecycle of stor device
From: "K. Y. Srinivasan" <kys@microsoft.com>
Date: 2011-07-15 17:40:36
Also in:
lkml
Subsystem:
staging subsystem, the rest · Maintainers:
Greg Kroah-Hartman, Linus Torvalds
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@microsoft.com> Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com> --- 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
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