aio: Consider AIO pages as "should be dumped"

We were luckely on built-in tests, because always
AIO pages were present, and, thus, they are dumped.
But AIO pages are not guaranteed to be present
in common case.

This patch makes AIO pages are dumped certanly.
Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

criu/mem.c

@@ -102,6 +102,8 @@ static inline bool should_dump_page(VmaEntry *vmae, u64 pme)
 	 */
 	if (vma_entry_is(vmae, VMA_FILE_PRIVATE) && (pme & PME_FILE))
 		return false;
+	if (vma_entry_is(vmae, VMA_AREA_AIORING))
+		return true;
 	if (pme & PME_SWAP)
 		return true;
 	if ((pme & PME_PRESENT) && ((pme & PME_PFRAME_MASK) != kdat.zero_page_pfn))