From: Mike Snitzer <snitzer@kernel.org>
Date: Tue, 14 Feb 2023 18:06:05 +0000 (-0500)
Subject: dm: remove flush_scheduled_work() during local_exit()
X-Git-Tag: v6.1.16~527
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=5b8cd07aba15973a3a7b9848b4fad417a739e2ac;p=users%2Fdwmw2%2Flinux.git

dm: remove flush_scheduled_work() during local_exit()

[ Upstream commit 0b22ff5360f5c4e11050b89206370fdf7dc0a226 ]

Commit acfe0ad74d2e1 ("dm: allocate a special workqueue for deferred
device removal") switched from using system workqueue to a single
workqueue local to DM.  But it didn't eliminate the call to
flush_scheduled_work() that was introduced purely for the benefit of
deferred device removal with commit 2c140a246dc ("dm: allow remove to
be deferred").

Since DM core uses its own workqueue (and queue_work) there is no need
to call flush_scheduled_work() from local_exit().  local_exit()'s
destroy_workqueue(deferred_remove_workqueue) handles flushing work
started with queue_work().

Fixes: acfe0ad74d2e1 ("dm: allocate a special workqueue for deferred device removal")
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index d49809e9db96e..2ce16e6c1e357 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -231,7 +231,6 @@ out_uevent_exit:
 
 static void local_exit(void)
 {
-	flush_scheduled_work();
 	destroy_workqueue(deferred_remove_workqueue);
 
 	unregister_blkdev(_major, _name);