CHECK: extern prototypes should be avoided in .h files
#39: FILE: include/linux/gfp.h:394:
+extern void free_pages_nolock(struct page *page, unsigned int order);

WARNING: line length of 84 exceeds 80 columns
#82: FILE: lib/stackdepot.c:676:
+			free_pages_nolock(virt_to_page(prealloc), DEPOT_POOL_ORDER);

WARNING: line length of 87 exceeds 80 columns
#141: FILE: mm/page_alloc.c:1289:
+			split_large_buddy(zone, p, page_to_pfn(p), p_order, fpi_flags);

WARNING: line length of 84 exceeds 80 columns
#196: FILE: mm/page_alloc.c:2719:
+			free_one_page(page_zone(page), page, pfn, order, fpi_flags);

CHECK: Logical continuations should be on the previous line
#204: FILE: mm/page_alloc.c:2727:
+	if (unlikely((fpi_flags & FPI_TRYLOCK) && IS_ENABLED(CONFIG_PREEMPT_RT)
+		     && (in_nmi() || in_hardirq()))) {

WARNING: line length of 87 exceeds 80 columns
#212: FILE: mm/page_alloc.c:2734:
+		free_unref_page_commit(zone, pcp, page, migratetype, order, fpi_flags);

CHECK: Please use a blank line after function/struct/union/enum declarations
#261: FILE: mm/page_alloc.c:4915:
 }
+void __free_pages(struct page *page, unsigned int order)

total: 0 errors, 4 warnings, 3 checks, 229 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 2179e8778825 ("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, 4 warnings, 3 checks, 229 lines checked