[PATCH 4.14 22/55] userfaultfd: use ENOENT instead of EFAULT if the atomic copy user fails

4.14-stable review patch. If anyone has any objections, please let me know. -- From: Andrea Arcangeli commit 9e368259ad988356c4c95150fafd1a06af095d98 upstream. Patch series "userfaultfd shmem updates". Jann found two bugs in the userfaultfd shmem MAP_SHARED backend: the lack

[PATCH 4.14 22/55] userfaultfd: use ENOENT instead of EFAULT if the atomic copy user fails

4.14-stable review patch. If anyone has any objections, please let me know. -- From: Andrea Arcangeli commit 9e368259ad988356c4c95150fafd1a06af095d98 upstream. Patch series "userfaultfd shmem updates". Jann found two bugs in the userfaultfd shmem MAP_SHARED backend: the lack