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

Original commit IDS:
	3334a45 mm/page_alloc: use ac->high_zoneidx for classzone_idx
	f27ce0e page_alloc: consider highatomic reserve in watermark fast
	9282012 page_alloc: fix invalid watermark check on a negative value

Changes from v1:
- Add commit information of the original patches.

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(-)

-- 
2.7.4

On Sun, Sep 25, 2022 at 03:35:26AM -0700, wangyong wrote:
> Here are the corresponding backports to 4.19.
> And fix classzone_idx context differences causing patch merge conflicts.
> 
> Original commit IDS:
> 	3334a45 mm/page_alloc: use ac->high_zoneidx for classzone_idx
> 	f27ce0e page_alloc: consider highatomic reserve in watermark fast
> 	9282012 page_alloc: fix invalid watermark check on a negative value
> 
> Changes from v1:
> - Add commit information of the original patches.

None of these have your signed-off-by on them showing that the backport
came from you and that you are responsible for them.

So even if we did think they were valid to backport, I can't take them
as-is :(

thanks,

greg k-h