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Tue, 16 Jul 2019 18:14:52 +0000 From: Shamir Rabinovitch To: dledford@redhat.com, jgg@ziepe.ca, leon@kernel.org, monis@mellanox.com, parav@mellanox.com, danielj@mellanox.com, kamalheib1@gmail.com, markz@mellanox.com, swise@opengridcomputing.com, shamir.rabinovitch@oracle.com, johannes.berg@intel.com, willy@infradead.org, michaelgur@mellanox.com, markb@mellanox.com, yuval.shaia@oracle.com, dan.carpenter@oracle.com, bvanassche@acm.org, maxg@mellanox.com, israelr@mellanox.com, galpress@amazon.com, denisd@mellanox.com, yuvalav@mellanox.com, dennis.dalessandro@intel.com, will@kernel.org, ereza@mellanox.com, jgg@mellanox.com, linux-rdma@vger.kernel.org Subject: [PATCH 24/25] IB/uverbs: Add clone reference counting to ib_mr Date: Tue, 16 Jul 2019 21:11:59 +0300 Message-Id: <20190716181200.4239-25-srabinov7@gmail.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190716181200.4239-1-srabinov7@gmail.com> References: <20190716181200.4239-1-srabinov7@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9320 signatures=668688 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=0 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1907160223 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9320 signatures=668688 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1034 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1907160223 Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org From: Yuval Shaia To keep track of shared object life time add ref count to ib_mr Signed-off-by: Yuval Shaia --- drivers/infiniband/core/uverbs_cmd.c | 2 ++ include/rdma/ib_verbs.h | 3 +++ 2 files changed, 5 insertions(+) diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c index dc1ffcf44ee5..229fc8e48391 100644 --- a/drivers/infiniband/core/uverbs_cmd.c +++ b/drivers/infiniband/core/uverbs_cmd.c @@ -768,8 +768,10 @@ static int ib_uverbs_reg_mr(struct uverbs_attr_bundle *attrs) atomic_inc(&pd->usecnt); mr->res.type = RDMA_RESTRACK_MR; rdma_restrack_uadd(&mr->res); + atomic_set(&mr->refcnt, 1); uobj->object = mr; + uobj->refcnt = &mr->refcnt; memset(&resp, 0, sizeof resp); resp.lkey = mr->lkey; diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index 0ff2732794c9..01be29a71d90 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -1742,6 +1742,9 @@ struct ib_mr { * Implementation details of the RDMA core, don't use in drivers: */ struct rdma_restrack_entry res; + + /* number of uobj using this ib_pd */ + atomic_t refcnt; }; struct ib_mw { -- 2.20.1