WARNING: Do not crash the kernel unless it is absolutely unavoidable--use WARN_ON_ONCE() plus recovery code (if feasible) instead of BUG() or variants
#49: FILE: mm/page_frag_cache.c:32:
+		VM_BUG_ON(compound_order(page) !=

WARNING: line length of 81 exceeds 80 columns
#179: FILE: mm/page_frag_cache.c:144:
+	return encoded_page_address(nc->encoded_va) + (size - aligned_remaining);

total: 0 errors, 2 warnings, 0 checks, 149 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 3d2cdeb1bff8 ("mm: page_frag: some minor refactoring before adding new API") 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, 2 warnings, 0 checks, 149 lines checked