From fe063491e90d0e1907fab577ad3d3da7e2efe9ff Mon Sep 17 00:00:00 2001 From: Hannes Reinecke Date: Thu, 3 Apr 2025 09:19:29 +0200 Subject: [PATCH] nvme: requeue namespace scan on missed AENs [ Upstream commit 9546ad1a9bda7362492114f5866b95b0ac4a100e ] Scanning for namespaces can take some time, so if the target is reconfigured while the scan is running we may miss a Attached Namespace Attribute Changed AEN. Check if the NVME_AER_NOTICE_NS_CHANGED bit is set once the scan has finished, and requeue scanning to pick up any missed change. Signed-off-by: Hannes Reinecke Reviewed-by: Keith Busch Signed-off-by: Christoph Hellwig Signed-off-by: Sasha Levin --- drivers/nvme/host/core.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index f00665ad0c11..e36c6fcab1ee 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -3972,6 +3972,10 @@ static void nvme_scan_work(struct work_struct *work) nvme_scan_ns_sequential(ctrl); } mutex_unlock(&ctrl->scan_lock); + + /* Requeue if we have missed AENs */ + if (test_bit(NVME_AER_NOTICE_NS_CHANGED, &ctrl->events)) + nvme_queue_scan(ctrl); } /*