From: Hannes Reinecke hare@kernel.org
[ Upstream commit 62baf70c327444338c34703c71aa8cc8e4189bd6 ]
When scanning for new namespaces we might have missed an ANA AEN.
The NVMe base spec (NVMe Base Specification v2.1, Figure 151 'Asynchonous Event Information - Notice': Asymmetric Namespace Access Change) states:
A controller shall not send this even if an Attached Namespace Attribute Changed asynchronous event [...] is sent for the same event.
so we need to re-read the ANA log page after we rescanned the namespace list to update the ANA states of the new namespaces.
Signed-off-by: Hannes Reinecke hare@kernel.org Reviewed-by: Keith Busch kbusch@kernel.org Signed-off-by: Christoph Hellwig hch@lst.de Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/nvme/host/core.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index 1b386889242c3..33184d36310d4 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -4286,6 +4286,11 @@ static void nvme_scan_work(struct work_struct *work) /* Requeue if we have missed AENs */ if (test_bit(NVME_AER_NOTICE_NS_CHANGED, &ctrl->events)) nvme_queue_scan(ctrl); +#ifdef CONFIG_NVME_MULTIPATH + else + /* Re-read the ANA log page to not miss updates */ + queue_work(nvme_wq, &ctrl->ana_work); +#endif }
/*