Re: [PATCH] RDMA/hfi1: Convert from atomic_t to refcount_t on hfi1_devdata->user_refcount

[Jason Gunthorpe]

On Mon, Jul 19, 2021 at 02:00:53PM +0800, Xiyu Yang wrote:
> refcount_t type and corresponding API can protect refcounters from
> accidental underflow and overflow and further use-after-free situations.
> 
> Signed-off-by: Xiyu Yang <xiyuyang19@xxxxxxxxxxxx>
> Signed-off-by: Xin Tan <tanxin.ctf@xxxxxxxxx>
> Tested-by: Josh Fisher <josh.fisher@xxxxxxxxxxxxxxxxxxxx>
> Acked-by: Dennis Dalessandro <dennis.dalessandro@xxxxxxxxxxxxxxxxxxxx>
> ---
>  drivers/infiniband/hw/hfi1/chip.c     | 2 +-
>  drivers/infiniband/hw/hfi1/file_ops.c | 6 +++---
>  drivers/infiniband/hw/hfi1/hfi.h      | 3 ++-
>  drivers/infiniband/hw/hfi1/init.c     | 2 +-
>  4 files changed, 7 insertions(+), 6 deletions(-)

Applied to for-next, thanks

Jason