Thanks for your patch.

note your commit msg with following ohos style and add your SOB. 

mm: add cma reuse feature

maillist inclusion
category: feature
issue: #I4LUG4
CVE: NA

Reference: https://lkml.org/lkml/2020/11/2/646

-----------------------------------------
ÔÚ 2021/12/10 19:53, lijiawei дµÀ:
From: lijiawei <lijiawei49@huawei.com>

Heesub Shin (1):
  maillist inclusion category: feature issue:#I4LUG4 CVE: NA

lijiawei (1):
  ohos inclusion category: feature issue:#I4LUG4 CVE: NA

 include/linux/gfp.h     | 14 +++++++++++---
 include/linux/highmem.h |  4 +++-
 include/linux/mmzone.h  | 11 ++++++++++-
 mm/Kconfig              | 10 ++++++++++
 mm/compaction.c         |  2 +-
 mm/page_alloc.c         | 36 +++++++++++++++++++++++++++++++++---
 6 files changed, 68 insertions(+), 9 deletions(-)