Subject: Re: [PATCH 03/12] net: mana: Handle vport sharing between devices

On Tue, 17 May 2022 02:04:27 -0700
longli@linuxonhyperv.com wrote:

quoted

diff --git a/drivers/net/ethernet/microsoft/mana/mana.h

b/drivers/net/ethernet/microsoft/mana/mana.h

quoted

index 51bff91b63ee..26f14fcb6a61 100644

--- a/drivers/net/ethernet/microsoft/mana/mana.h
+++ b/drivers/net/ethernet/microsoft/mana/mana.h

@@ -375,6 +375,7 @@ struct mana_port_context {
 	unsigned int num_queues;

 	mana_handle_t port_handle;
+	atomic_t port_use_count;

Could this be a refcount_t instead?
The refcount_t has protections against under/overflow.

Thanks for pointing this out. I will use refcount_t for v2.

Long