WARNING: added, moved or deleted file(s), does MAINTAINERS need updating?
#49: 
new file mode 100644

WARNING: line length of 83 exceeds 80 columns
#166: FILE: tools/testing/selftests/mm/page_frag/page_frag_test.c:89:
+			va = page_frag_alloc(&test_nc, test_alloc_len, GFP_KERNEL);

WARNING: line length of 82 exceeds 80 columns
#343: FILE: tools/testing/selftests/mm/test_page_frag.sh:61:
+	echo "Run performance tests to evaluate how fast nonaligned alloc API is."

WARNING: From:/Signed-off-by: email address mismatch: 'From: Yunsheng Lin <yunshenglin0825@gmail.com>' != 'Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>'

total: 0 errors, 4 warnings, 0 checks, 397 lines checked

NOTE: For some of the reported defects, checkpatch may be able to
      mechanically convert to the typical style using --fix or --fix-inplace.

Commit 8dcd180febf3 ("mm: page_frag: add a test module for page_frag") has style problems, please review.

NOTE: Ignored message types: ALLOC_SIZEOF_STRUCT BAD_REPORTED_BY_LINK CAMELCASE COMMIT_LOG_LONG_LINE GIT_COMMIT_ID MACRO_ARG_REUSE NO_AUTHOR_SIGN_OFF

NOTE: If any of the errors are false positives, please report
      them to the maintainer, see CHECKPATCH in MAINTAINERS.
total: 0 errors, 4 warnings, 0 checks, 397 lines checked