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Subject[git patch review 2/7] [IB] umad: get rid of unused mr array
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Now that ib_umad uses the new MAD sending interface, it no longer
needs its own L_Key. So just delete the array of MRs that it keeps.

Signed-off-by: Roland Dreier <rolandd@cisco.com>

---
drivers/infiniband/core/user_mad.c | 29 ++++-------------------------
1 files changed, 4 insertions(+), 25 deletions(-)
applies-to: e7b9ffe6fca9246f29a0a3cdf6417770f5821cef
ec914c52d6208d8752dfd85b48a9aff304911434
diff --git a/drivers/infiniband/core/user_mad.c b/drivers/infiniband/core/user_mad.c
index f5ed36c..d61f544 100644
--- a/drivers/infiniband/core/user_mad.c
+++ b/drivers/infiniband/core/user_mad.c
@@ -116,7 +116,6 @@ struct ib_umad_file {
spinlock_t recv_lock;
wait_queue_head_t recv_wait;
struct ib_mad_agent *agent[IB_UMAD_MAX_AGENTS];
- struct ib_mr *mr[IB_UMAD_MAX_AGENTS];
};

struct ib_umad_packet {
@@ -505,29 +504,16 @@ found:
goto out;
}

- file->mr[agent_id] = ib_get_dma_mr(agent->qp->pd, IB_ACCESS_LOCAL_WRITE);
- if (IS_ERR(file->mr[agent_id])) {
- ret = -ENOMEM;
- goto err;
- }
-
if (put_user(agent_id,
(u32 __user *) (arg + offsetof(struct ib_user_mad_reg_req, id)))) {
ret = -EFAULT;
- goto err_mr;
+ ib_unregister_mad_agent(agent);
+ goto out;
}

file->agent[agent_id] = agent;
ret = 0;

- goto out;
-
-err_mr:
- ib_dereg_mr(file->mr[agent_id]);
-
-err:
- ib_unregister_mad_agent(agent);
-
out:
up_write(&file->port->mutex);
return ret;
@@ -536,7 +522,6 @@ out:
static int ib_umad_unreg_agent(struct ib_umad_file *file, unsigned long arg)
{
struct ib_mad_agent *agent = NULL;
- struct ib_mr *mr = NULL;
u32 id;
int ret = 0;

@@ -551,16 +536,13 @@ static int ib_umad_unreg_agent(struct ib
}

agent = file->agent[id];
- mr = file->mr[id];
file->agent[id] = NULL;

out:
up_write(&file->port->mutex);

- if (agent) {
+ if (agent)
ib_unregister_mad_agent(agent);
- ib_dereg_mr(mr);
- }

return ret;
}
@@ -629,10 +611,8 @@ static int ib_umad_close(struct inode *i
int i;

for (i = 0; i < IB_UMAD_MAX_AGENTS; ++i)
- if (file->agent[i]) {
+ if (file->agent[i])
ib_unregister_mad_agent(file->agent[i]);
- ib_dereg_mr(file->mr[i]);
- }

list_for_each_entry_safe(packet, tmp, &file->recv_list, list)
kfree(packet);
@@ -872,7 +852,6 @@ static void ib_umad_kill_port(struct ib_
for (id = 0; id < IB_UMAD_MAX_AGENTS; ++id) {
if (!file->agent[id])
continue;
- ib_dereg_mr(file->mr[id]);
ib_unregister_mad_agent(file->agent[id]);
file->agent[id] = NULL;
}
---
0.99.9e
-
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