[PATCH 4/5] mm: don't automatically unregister bdis

[Christoph Hellwig]

All BDI users now unregister explicitly.

Signed-off-by: Christoph Hellwig <hch at lst.de>
---
 mm/backing-dev.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/mm/backing-dev.c b/mm/backing-dev.c
index 8a46a0a4b72fa..768e9ae489f66 100644
--- a/mm/backing-dev.c
+++ b/mm/backing-dev.c
@@ -965,8 +965,7 @@ static void release_bdi(struct kref *ref)
 	struct backing_dev_info *bdi =
 			container_of(ref, struct backing_dev_info, refcnt);
 
-	if (test_bit(WB_registered, &bdi->wb.state))
-		bdi_unregister(bdi);
+	WARN_ON_ONCE(test_bit(WB_registered, &bdi->wb.state));
 	WARN_ON_ONCE(bdi->dev);
 	wb_exit(&bdi->wb);
 	kfree(bdi);
-- 
2.30.2