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nvmet-rdma: occasionally flush ongoing controller teardown

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If we are attacked with establishments/teradowns we need to
make sure we do not consume too much system memory. Thus
let ongoing controller teardowns complete before accepting
new controller establishments.

Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Sagi Grimberg 2017-03-21 16:29:49 +02:00 committed by Jens Axboe
parent dc2ad16ab2
commit 777dc82395
1 changed files with 5 additions and 0 deletions
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5
drivers/nvme/target/rdma.c
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@ -1199,6 +1199,11 @@ static int nvmet_rdma_queue_connect(struct rdma_cm_id *cm_id,
}
queue->port = cm_id->context;
if (queue->host_qid == 0) {
/* Let inflight controller teardown complete */
flush_scheduled_work();
}
ret = nvmet_rdma_cm_accept(cm_id, queue, &event->param.conn);
if (ret)
goto release_queue;