Commit eb4318e5 authored Jan 30, 2019 by Anand Jain Committed by David Sterba Feb 25, 2019

btrfs: scrub: add scrub_lock lockdep check in scrub_workers_get



scrub_workers_refcnt is protected by scrub_lock, add lockdep_assert_held()
in scrub_workers_get().

Signed-off-by: Anand Jain <anand.jain@oracle.com>
Suggested-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

parent 1cec3f27

fs/btrfs/scrub.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -3741,6 +3741,8 @@ static noinline_for_stack int scrub_workers_get(struct btrfs_fs_info *fs_info,
		unsigned int flags = WQ_FREEZABLE \| WQ_UNBOUND;
		int max_active = fs_info->thread_pool_size;

		lockdep_assert_held(&fs_info->scrub_lock);

		if (fs_info->scrub_workers_refcnt == 0) {
		fs_info->scrub_workers = btrfs_alloc_workqueue(fs_info, "scrub",
		flags, is_dev_replace ? 1 : max_active, 4);

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