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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 <heiko.carstens@de.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
David Hildenbrand 2015-10-15 10:47:18 +02:00 committed by Martin Schwidefsky
parent db1c45154a
commit 406123517b
1 changed files with 1 additions and 0 deletions
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arch/s390/mm/gup.c
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@ -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)