There are some refcnt in type of atomic_t in RDMA subsystem, almost all of them is wrote before the refcount_t is acheived in kernel. refcount_t is better than integer for reference counting, it will WARN on overflow/underflow and avoid use-after-free risks. Changes since v3: * Drop the rdmavt patch because the refcount_t is not suitable for the logic. * Link: https://patchwork.kernel.org/project/linux-rdma/cover/1621925504-33019-1-git-send-email-liweihang@xxxxxxxxxx/ Changes since v2: * Drop i40iw related parts because this driver will be removed soon. * Link: https://patchwork.kernel.org/project/linux-rdma/cover/1621590825-60693-1-git-send-email-liweihang@xxxxxxxxxx/ Changes since v1: * Split these patches by variable granularity. * Fix a warning on refcount of struct mcast_group. * Add a patch on rdmavt. * Drop "RDMA/hns: Use refcount_t APIs for HEM". * Link: https://patchwork.kernel.org/project/linux-rdma/cover/1620958299-4869-1-git-send-email-liweihang@xxxxxxxxxx/ Weihang Li (12): RDMA/core: Use refcount_t instead of atomic_t on refcount of iwcm_id_private RDMA/core: Use refcount_t instead of atomic_t on refcount of iwpm_admin_data RDMA/core: Use refcount_t instead of atomic_t on refcount of ib_mad_snoop_private RDMA/core: Use refcount_t instead of atomic_t on refcount of mcast_member RDMA/core: Use refcount_t instead of atomic_t on refcount of mcast_port RDMA/core: Use refcount_t instead of atomic_t on refcount of mcast_group RDMA/core: Use refcount_t instead of atomic_t on refcount of ib_uverbs_device RDMA/hns: Use refcount_t instead of atomic_t for CQ reference counting RDMA/hns: Use refcount_t instead of atomic_t for SRQ reference counting RDMA/hns: Use refcount_t instead of atomic_t for QP reference counting RDMA/cxgb4: Use refcount_t instead of atomic_t for reference counting RDMA/ipoib: Use refcount_t instead of atomic_t for reference counting drivers/infiniband/core/iwcm.c | 9 ++++--- drivers/infiniband/core/iwcm.h | 2 +- drivers/infiniband/core/iwpm_util.c | 12 ++++++---- drivers/infiniband/core/iwpm_util.h | 2 +- drivers/infiniband/core/mad_priv.h | 2 +- drivers/infiniband/core/multicast.c | 37 ++++++++++++++++------------- drivers/infiniband/core/uverbs.h | 2 +- drivers/infiniband/core/uverbs_main.c | 12 +++++----- drivers/infiniband/hw/cxgb4/cq.c | 6 ++--- drivers/infiniband/hw/cxgb4/ev.c | 8 +++---- drivers/infiniband/hw/cxgb4/iw_cxgb4.h | 2 +- drivers/infiniband/hw/hns/hns_roce_cq.c | 8 +++---- drivers/infiniband/hw/hns/hns_roce_device.h | 6 ++--- drivers/infiniband/hw/hns/hns_roce_qp.c | 12 +++++----- drivers/infiniband/hw/hns/hns_roce_srq.c | 8 +++---- drivers/infiniband/ulp/ipoib/ipoib.h | 4 ++-- drivers/infiniband/ulp/ipoib/ipoib_main.c | 8 +++---- 17 files changed, 74 insertions(+), 66 deletions(-) -- 2.7.4
