diff options
| -rw-r--r-- | mm/util.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/mm/util.c b/mm/util.c index cb00b748ce47..434f9257ed69 100644 --- a/mm/util.c +++ b/mm/util.c @@ -101,6 +101,19 @@ void *__krealloc(const void *p, size_t new_size, gfp_t flags) } EXPORT_SYMBOL(__krealloc); +/* + * Like get_user_pages_fast() except its IRQ-safe in that it won't fall + * back to the regular GUP. + * If the architecture not support this fucntion, simply return with no + * page pinned + */ +int __attribute__((weak)) __get_user_pages_fast(unsigned long start, + int nr_pages, int write, struct page **pages) +{ + return 0; +} +EXPORT_SYMBOL_GPL(__get_user_pages_fast); + /** * krealloc - reallocate memory. The contents will remain unchanged. * @p: object to reallocate memory for. |