CHECK: extern prototypes should be avoided in .h files
#29: FILE: include/linux/gfp.h:375:
+extern void free_pages_nolock(struct page *page, unsigned int order);

WARNING: line length of 87 exceeds 80 columns
#115: FILE: mm/page_alloc.c:1287:
+			split_large_buddy(zone, p, page_to_pfn(p), p_order, fpi_flags);

WARNING: line length of 84 exceeds 80 columns
#170: FILE: mm/page_alloc.c:2717:
+			free_one_page(page_zone(page), page, pfn, order, fpi_flags);

WARNING: line length of 87 exceeds 80 columns
#185: FILE: mm/page_alloc.c:2731:
+		free_unref_page_commit(zone, pcp, page, migratetype, order, fpi_flags);

total: 0 errors, 3 warnings, 1 checks, 180 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 fb33c49db3fd ("mm, bpf: Introduce free_pages_nolock()") 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, 3 warnings, 1 checks, 180 lines checked