scrub_workers_refcnt is protected by scrub_lock, add lockdep_assert_held()
function in scrub_workers_get().
Signed-off-by: Anand Jain <anand.jain@xxxxxxxxxx>
Suggested-by: Nikolay Borisov <nborisov@xxxxxxxx>
---
v3: none
v2: born
fs/btrfs/scrub.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c
index 9ade0659f017..84ef1f0d371e 100644
--- a/fs/btrfs/scrub.c
+++ b/fs/btrfs/scrub.c
@@ -3726,6 +3726,8 @@ 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);
--
1.8.3.1
