Merge branch 'akpm' (patches from Andrew)

Merge misc fixes from Andrew Morton:
 "7 fixes"

* emailed patches from Andrew Morton <[email protected]>:
  kasan: add missing functions declarations to kasan.h
  kasan: consistently disable debugging features
  ipc/util.c: sysvipc_find_ipc() incorrectly updates position index
  userfaultfd: fix remap event with MREMAP_DONTUNMAP
  mm/gup: fix fixup_user_fault() on multiple retries
  epoll: call final ep_events_available() check under the lock
  mm, memcg: fix inconsistent oom event behavior