diff options
| author | Chris Mason <chris.mason@oracle.com> | 2010-05-12 01:15:35 +0200 |
|---|---|---|
| committer | Andy Grover <andy.grover@oracle.com> | 2010-09-09 03:15:13 +0200 |
| commit | 1cc2228c599f173d77000a250bf0541294e1a7be (patch) | |
| tree | cc84662c1fd550274e8bba759074873b7c8e017d /net/rds | |
| parent | rds: use RCU to protect the connection hash (diff) | |
| download | linux-1cc2228c599f173d77000a250bf0541294e1a7be.tar.xz linux-1cc2228c599f173d77000a250bf0541294e1a7be.zip | |
rds: Fix reference counting on the for xmit_atomic and xmit_rdma
This makes sure we have the proper number of references in
rds_ib_xmit_atomic and rds_ib_xmit_rdma. We also consistently
drop references the same way for all message types as the IOs end.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'net/rds')
| -rw-r--r-- | net/rds/ib_send.c | 10 | ||||
| -rw-r--r-- | net/rds/send.c | 10 |
2 files changed, 11 insertions, 9 deletions
diff --git a/net/rds/ib_send.c b/net/rds/ib_send.c index 82459e52c771..209dbc6d159d 100644 --- a/net/rds/ib_send.c +++ b/net/rds/ib_send.c @@ -757,6 +757,8 @@ int rds_ib_xmit_atomic(struct rds_connection *conn, struct rm_atomic_op *op) send->s_wr.next = NULL; send->s_wr.wr.atomic.remote_addr = op->op_remote_addr; send->s_wr.wr.atomic.rkey = op->op_rkey; + send->s_op = op; + rds_message_addref(container_of(send->s_op, struct rds_message, atomic)); /* map 8 byte retval buffer to the device */ ret = ib_dma_map_sg(ic->i_cm_id->device, op->op_sg, 1, DMA_FROM_DEVICE); @@ -857,13 +859,13 @@ int rds_ib_xmit_rdma(struct rds_connection *conn, struct rm_rdma_op *op) for (i = 0; i < work_alloc && scat != &op->op_sg[op->op_count]; i++) { send->s_wr.send_flags = 0; send->s_queued = jiffies; + send->s_op = NULL; rds_ib_set_wr_signal_state(ic, send, op->op_notify); send->s_wr.opcode = op->op_write ? IB_WR_RDMA_WRITE : IB_WR_RDMA_READ; send->s_wr.wr.rdma.remote_addr = remote_addr; send->s_wr.wr.rdma.rkey = op->op_rkey; - send->s_op = op; if (num_sge > rds_ibdev->max_sge) { send->s_wr.num_sge = rds_ibdev->max_sge; @@ -899,6 +901,12 @@ int rds_ib_xmit_rdma(struct rds_connection *conn, struct rm_rdma_op *op) send = ic->i_sends; } + /* give a reference to the last op */ + if (scat == &op->op_sg[op->op_count]) { + prev->s_op = op; + rds_message_addref(container_of(op, struct rds_message, rdma)); + } + if (i < work_alloc) { rds_ib_ring_unalloc(&ic->i_send_ring, work_alloc - i); work_alloc = i; diff --git a/net/rds/send.c b/net/rds/send.c index 5c6d4a0be0d7..437f1e72609c 100644 --- a/net/rds/send.c +++ b/net/rds/send.c @@ -233,13 +233,10 @@ restart: /* The transport either sends the whole rdma or none of it */ if (rm->rdma.op_active && !conn->c_xmit_rdma_sent) { - rds_message_addref(rm); rm->m_final_op = &rm->rdma; ret = conn->c_trans->xmit_rdma(conn, &rm->rdma); - if (ret) { - rds_message_put(rm); + if (ret) break; - } conn->c_xmit_rdma_sent = 1; /* The transport owns the mapped memory for now. @@ -248,13 +245,10 @@ restart: } if (rm->atomic.op_active && !conn->c_xmit_atomic_sent) { - rds_message_addref(rm); rm->m_final_op = &rm->atomic; ret = conn->c_trans->xmit_atomic(conn, &rm->atomic); - if (ret) { - rds_message_put(rm); + if (ret) break; - } conn->c_xmit_atomic_sent = 1; /* The transport owns the mapped memory for now. |