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-rw-r--r--drivers/md/bcache/closure.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/md/bcache/closure.h b/drivers/md/bcache/closure.h
index 965907ce1e20..ccfbea6f9f6b 100644
--- a/drivers/md/bcache/closure.h
+++ b/drivers/md/bcache/closure.h
@@ -252,6 +252,12 @@ static inline void set_closure_fn(struct closure *cl, closure_fn *fn,
static inline void closure_queue(struct closure *cl)
{
struct workqueue_struct *wq = cl->wq;
+ /**
+ * Changes made to closure, work_struct, or a couple of other structs
+ * may cause work.func not pointing to the right location.
+ */
+ BUILD_BUG_ON(offsetof(struct closure, fn)
+ != offsetof(struct work_struct, func));
if (wq) {
INIT_WORK(&cl->work, cl->work.func);
BUG_ON(!queue_work(wq, &cl->work));