NVMe: add ->exit_hctx() hook
If we do teardown and setup of the queue and block related parts
of the driver, then we should clear nvmeq->hctx once we kill the
hardware queue.
Acked-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
diff --git a/drivers/block/nvme-core.c b/drivers/block/nvme-core.c
index 9310fe5..ba278ae 100644
--- a/drivers/block/nvme-core.c
+++ b/drivers/block/nvme-core.c
@@ -171,6 +171,13 @@
return 0;
}
+static void nvme_exit_hctx(struct blk_mq_hw_ctx *hctx, unsigned int hctx_idx)
+{
+ struct nvme_queue *nvmeq = hctx->driver_data;
+
+ nvmeq->hctx = NULL;
+}
+
static int nvme_init_hctx(struct blk_mq_hw_ctx *hctx, void *data,
unsigned int hctx_idx)
{
@@ -1335,6 +1342,7 @@
.queue_rq = nvme_admin_queue_rq,
.map_queue = blk_mq_map_queue,
.init_hctx = nvme_admin_init_hctx,
+ .exit_hctx = nvme_exit_hctx,
.init_request = nvme_admin_init_request,
.timeout = nvme_timeout,
};
@@ -1343,6 +1351,7 @@
.queue_rq = nvme_queue_rq,
.map_queue = blk_mq_map_queue,
.init_hctx = nvme_init_hctx,
+ .exit_hctx = nvme_exit_hctx,
.init_request = nvme_init_request,
.timeout = nvme_timeout,
};