From: Zeng Jingxiang <linuszeng@xxxxxxxxxxx> z3fold_page_lock() will lock zhdr->page_lock 1630 z3fold_page_lock(zhdr); return without unlocking zhdr->page_lock 1634 if (kref_put(&zhdr->refcount, release_z3fold_page_locked)) 1635 return; Signed-off-by: Zeng Jingxiang <linuszeng@xxxxxxxxxxx> --- mm/z3fold.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/mm/z3fold.c b/mm/z3fold.c index f41f8b0d9e9a..03785832ad47 100644 --- a/mm/z3fold.c +++ b/mm/z3fold.c @@ -1632,13 +1632,14 @@ static void z3fold_page_putback(struct page *page) list_del_init(&zhdr->buddy); INIT_LIST_HEAD(&page->lru); if (kref_put(&zhdr->refcount, release_z3fold_page_locked)) - return; + goto ret; spin_lock(&pool->lock); list_add(&page->lru, &pool->lru); spin_unlock(&pool->lock); if (list_empty(&zhdr->buddy)) add_to_unbuddied(pool, zhdr); clear_bit(PAGE_CLAIMED, &page->private); +ret: z3fold_page_unlock(zhdr); } -- 2.27.0
