From: Sagi Grimberg <sagi@grimberg.me>
Date: Sun, 1 Jan 2017 11:41:56 +0000 (+0200)
Subject: nvmet: cancel fatal error and flush async work before free controller
X-Git-Tag: v4.10-rc6~11^2~2^2~3
X-Git-Url: https://git.kernelconcepts.de/?a=commitdiff_plain;h=06406d81a2d7cfb8abcc4fa6cdfeb8e5897007c5;p=karo-tx-linux.git

nvmet: cancel fatal error and flush async work before free controller

Make sure they are not running and we can free the controller
safely.

Signed-off-by: Roy Shterman <roys@lightbitslabs.com>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Christoph Hellwig <hch@lst.de>
---

diff --git a/drivers/nvme/target/core.c b/drivers/nvme/target/core.c
index 4a367549eb93..a327a43f8166 100644
--- a/drivers/nvme/target/core.c
+++ b/drivers/nvme/target/core.c
@@ -816,6 +816,9 @@ static void nvmet_ctrl_free(struct kref *ref)
 	list_del(&ctrl->subsys_entry);
 	mutex_unlock(&subsys->lock);
 
+	flush_work(&ctrl->async_event_work);
+	cancel_work_sync(&ctrl->fatal_err_work);
+
 	ida_simple_remove(&subsys->cntlid_ida, ctrl->cntlid);
 	nvmet_subsys_put(subsys);