From 406123517b5b3cd5855774f80d685cf393c950f6 Mon Sep 17 00:00:00 2001 From: David Hildenbrand Date: Thu, 15 Oct 2015 10:47:18 +0200 Subject: [PATCH] s390: get_user_pages_fast() might sleep Let's annotate it correctly, so we directly get a warning if we ever were to use it in atomic/preempt_disable/spinlock environment. Acked-by: Heiko Carstens Signed-off-by: David Hildenbrand Signed-off-by: Martin Schwidefsky --- arch/s390/mm/gup.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/s390/mm/gup.c b/arch/s390/mm/gup.c index 12bbf0e8478f..21c74a71e2ab 100644 --- a/arch/s390/mm/gup.c +++ b/arch/s390/mm/gup.c @@ -233,6 +233,7 @@ int get_user_pages_fast(unsigned long start, int nr_pages, int write, struct mm_struct *mm = current->mm; int nr, ret; + might_sleep(); start &= PAGE_MASK; nr = __get_user_pages_fast(start, nr_pages, write, pages); if (nr == nr_pages)