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| author | David Hildenbrand <dahi@linux.vnet.ibm.com> | 2015-10-15 10:47:18 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2015-11-27 09:24:15 +0100 |
| commit | 406123517b5b3cd5855774f80d685cf393c950f6 (patch) | |
| tree | a497fa0a667d6143b8d8ffef02036d8c0a98b5ec /arch/s390 | |
| parent | s390/spinlock: avoid diagnose loop (diff) | |
| download | linux-406123517b5b3cd5855774f80d685cf393c950f6.tar.xz linux-406123517b5b3cd5855774f80d685cf393c950f6.zip | |
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>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/mm/gup.c | 1 |
1 files changed, 1 insertions, 0 deletions
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) |