WARNING: line length of 83 exceeds 80 columns
#134: FILE: include/linux/page_frag_cache.h:83:
+static inline unsigned int page_frag_cache_page_size(struct encoded_va *encoded_va)

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
#263: FILE: mm/page_frag_cache.c:116:
+			VM_BUG_ON(compound_order(page) !=

WARNING: line length of 82 exceeds 80 columns
#277: FILE: mm/page_frag_cache.c:127:
+		nc->remaining = remaining = page_frag_cache_page_size(encoded_va);

CHECK: multiple assignments should be avoided
#277: FILE: mm/page_frag_cache.c:127:
+		nc->remaining = remaining = page_frag_cache_page_size(encoded_va);

total: 0 errors, 3 warnings, 1 checks, 242 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 fef44ee15ad9 ("mm: page_frag: reuse existing space for 'size' and 'pfmemalloc'") 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, 242 lines checked