get_user_pages() must not return the error when i != 0. When pages != NULL we
have i get_page()'ed pages.
Signed-off-by: Oleg Nesterov <[email protected]>
--- 26-rc2/mm/memory.c~1_GUP_OOM 2008-06-21 15:35:21.000000000 +0400
+++ 26-rc2/mm/memory.c 2008-06-21 15:56:58.000000000 +0400
@@ -1115,7 +1115,7 @@ int get_user_pages(struct task_struct *t
* be processed until returning to user space.
*/
if (unlikely(test_tsk_thread_flag(tsk, TIF_MEMDIE)))
- return -ENOMEM;
+ return i ? i : -ENOMEM;
if (write)
foll_flags |= FOLL_WRITE;