Merge branch 'akpm' (patches from Andrew)

Merge misc fixes from Andrew Morton:
 "17 fixes"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  arch: define weak abort()
  mm, oom_reaper: fix memory corruption
  kernel: make groups_sort calling a responsibility group_info allocators
  mm/frame_vector.c: release a semaphore in 'get_vaddr_frames()'
  tools/slabinfo-gnuplot: force to use bash shell
  kcov: fix comparison callback signature
  mm/slab.c: do not hash pointers when debugging slab
  mm/page_alloc.c: avoid excessive IRQ disabled times in free_unref_page_list()
  mm/memory.c: mark wp_huge_pmd() inline to prevent build failure
  scripts/faddr2line: fix CROSS_COMPILE unset error
  Documentation/vm/zswap.txt: update with same-value filled page feature
  exec: avoid gcc-8 warning for get_task_comm
  autofs: fix careless error in recent commit
  string.h: workaround for increased stack usage
  mm/kmemleak.c: make cond_resched() rate-limiting more efficient
  lib/rbtree,drm/mm: add rbtree_replace_node_cached()
  include/linux/idr.h: add #include <linux/bug.h>

1 files changed, 9 insertions, 0 deletions

diff --git a/include/linux/oom.h b/include/linux/oom.h
index 01c91d874a57..5bad038ac012 100644
--- a/include/linux/oom.h
+++ b/include/linux/oom.h
@@ -67,6 +67,15 @@ static inline bool tsk_is_oom_victim(struct task_struct * tsk)
 }
 
 /*
+ * Use this helper if tsk->mm != mm and the victim mm needs a special
+ * handling. This is guaranteed to stay true after once set.
+ */
+static inline bool mm_is_oom_victim(struct mm_struct *mm)
+{
+	return test_bit(MMF_OOM_VICTIM, &mm->flags);
+}
+
+/*
  * Checks whether a page fault on the given mm is still reliable.
  * This is no longer true if the oom reaper started to reap the
  * address space which is reflected by MMF_UNSTABLE flag set in