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nvme: move controller deletion to common code

Bläddra i källkod 
Move the ->delete_work and the associated helpers to common code instead
of duplicating them in every driver.  This also adds the missing reference
get/put for the loop driver.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Christoph Hellwig
2017-10-29 10:44:29 +02:00
förälder 29c0964873
incheckning c5017e8570
6 ändrade filer med 62 tillägg och 118 borttagningar
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45
drivers/nvme/host/rdma.c
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@@ -105,7 +105,6 @@ struct nvme_rdma_ctrl {
/* other member variables */
struct blk_mq_tag_set tag_set;
struct work_struct delete_work;
struct work_struct err_work;
struct nvme_rdma_qe async_event_sqe;
@@ -913,7 +912,7 @@ static void nvme_rdma_reconnect_or_remove(struct nvme_rdma_ctrl *ctrl)
ctrl->ctrl.opts->reconnect_delay * HZ);
} else {
dev_info(ctrl->ctrl.device, "Removing controller...\n");
queue_work(nvme_wq, &ctrl->delete_work);
queue_work(nvme_wq, &ctrl->ctrl.delete_work);
}
}
@@ -1764,41 +1763,10 @@ static void nvme_rdma_remove_ctrl(struct nvme_rdma_ctrl *ctrl)
nvme_put_ctrl(&ctrl->ctrl);
}
static void nvme_rdma_del_ctrl_work(struct work_struct *work)
static void nvme_rdma_delete_ctrl(struct nvme_ctrl *ctrl)
{
struct nvme_rdma_ctrl *ctrl = container_of(work,
struct nvme_rdma_ctrl, delete_work);
nvme_stop_ctrl(&ctrl->ctrl);
nvme_rdma_remove_ctrl(ctrl);
}
static int __nvme_rdma_del_ctrl(struct nvme_rdma_ctrl *ctrl)
{
if (!nvme_change_ctrl_state(&ctrl->ctrl, NVME_CTRL_DELETING))
return -EBUSY;
if (!queue_work(nvme_wq, &ctrl->delete_work))
return -EBUSY;
return 0;
}
static int nvme_rdma_del_ctrl(struct nvme_ctrl *nctrl)
{
struct nvme_rdma_ctrl *ctrl = to_rdma_ctrl(nctrl);
int ret = 0;
/*
* Keep a reference until all work is flushed since
* __nvme_rdma_del_ctrl can free the ctrl mem
*/
nvme_get_ctrl(&ctrl->ctrl);
ret = __nvme_rdma_del_ctrl(ctrl);
if (!ret)
flush_work(&ctrl->delete_work);
nvme_put_ctrl(&ctrl->ctrl);
return ret;
nvme_stop_ctrl(ctrl);
nvme_rdma_remove_ctrl(to_rdma_ctrl(ctrl));
}
static void nvme_rdma_reset_ctrl_work(struct work_struct *work)
@@ -1846,7 +1814,7 @@ static const struct nvme_ctrl_ops nvme_rdma_ctrl_ops = {
.reg_write32 = nvmf_reg_write32,
.free_ctrl = nvme_rdma_free_ctrl,
.submit_async_event = nvme_rdma_submit_async_event,
.delete_ctrl = nvme_rdma_del_ctrl,
.delete_ctrl = nvme_rdma_delete_ctrl,
.get_address = nvmf_get_address,
.reinit_request = nvme_rdma_reinit_request,
};
@@ -1977,7 +1945,6 @@ static struct nvme_ctrl *nvme_rdma_create_ctrl(struct device *dev,
INIT_DELAYED_WORK(&ctrl->reconnect_work,
nvme_rdma_reconnect_ctrl_work);
INIT_WORK(&ctrl->err_work, nvme_rdma_error_recovery_work);
INIT_WORK(&ctrl->delete_work, nvme_rdma_del_ctrl_work);
INIT_WORK(&ctrl->ctrl.reset_work, nvme_rdma_reset_ctrl_work);
ctrl->ctrl.queue_count = opts->nr_io_queues + 1; /* +1 for admin queue */
@@ -2081,7 +2048,7 @@ static void nvme_rdma_remove_one(struct ib_device *ib_device, void *client_data)
dev_info(ctrl->ctrl.device,
"Removing ctrl: NQN \"%s\", addr %pISp\n",
ctrl->ctrl.opts->subsysnqn, &ctrl->addr);
__nvme_rdma_del_ctrl(ctrl);
nvme_delete_ctrl(&ctrl->ctrl);
}
mutex_unlock(&nvme_rdma_ctrl_mutex);