[PATCH stable-4.19 0/3] page_alloc: consider highatomic reserve in watermark fast backports to 4.19

[wangyong]

Here are the corresponding backports to 4.19.
And fix classzone_idx context differences causing patch merge conflicts.

Jaewon Kim (2):
  page_alloc: consider highatomic reserve in watermark fast
  page_alloc: fix invalid watermark check on a negative value

Joonsoo Kim (1):
  mm/page_alloc: use ac->high_zoneidx for classzone_idx

 mm/internal.h   |  2 +-
 mm/page_alloc.c | 69 +++++++++++++++++++++++++++++++++------------------------
 2 files changed, 41 insertions(+), 30 deletions(-)

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2.7.4