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drbd: fix rmmod cleanup, remove _all_ debugfs entries

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If there are still resources defined, but "empty", no more volumes
or connections configured, they don't hold module reference counts,
so rmmod is possible.

To avoid DRBD leftovers in debugfs, we need to call our global
drbd_debugfs_cleanup() only after all resources have been cleaned up.

Signed-off-by: Philipp Reisner <[email protected]>
Signed-off-by: Lars Ellenberg <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Lars Ellenberg 2017-08-29 10:20:41 +02:00 • committed by Jens Axboe
commit 3f1a1b7cbb
1 changed files with 2 additions and 1 deletions
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3
drivers/block/drbd/drbd_main.c
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@ -2420,7 +2420,6 @@ static void drbd_cleanup(void)
destroy_workqueue(retry.wq);
drbd_genl_unregister();
drbd_debugfs_cleanup();
idr_for_each_entry(&drbd_devices, device, i)
drbd_delete_device(device);
@ -2431,6 +2430,8 @@ static void drbd_cleanup(void)
drbd_free_resource(resource);
}
drbd_debugfs_cleanup();
drbd_destroy_mempools();
unregister_blkdev(DRBD_MAJOR, "drbd");