WARNING: line length of 88 exceeds 80 columns
#41: FILE: include/linux/page_frag_cache.h:41:
+static inline unsigned int page_frag_cache_page_offset(const struct page_frag_cache *nc)

WARNING: line length of 86 exceeds 80 columns
#124: FILE: include/linux/page_frag_cache.h:160:
+static inline void *__page_frag_alloc_refill_prepare_align(struct page_frag_cache *nc,

WARNING: line length of 83 exceeds 80 columns
#126: FILE: include/linux/page_frag_cache.h:162:
+							   struct page_frag *pfrag,

WARNING: line length of 83 exceeds 80 columns
#128: FILE: include/linux/page_frag_cache.h:164:
+							   unsigned int align_mask)

WARNING: line length of 82 exceeds 80 columns
#130: FILE: include/linux/page_frag_cache.h:166:
+	return __page_frag_cache_prepare(nc, fragsz, pfrag, gfp_mask, align_mask);

WARNING: line length of 84 exceeds 80 columns
#133: FILE: include/linux/page_frag_cache.h:169:
+static inline void *page_frag_alloc_refill_prepare_align(struct page_frag_cache *nc,

WARNING: line length of 81 exceeds 80 columns
#135: FILE: include/linux/page_frag_cache.h:171:
+							 struct page_frag *pfrag,

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
#184: FILE: include/linux/page_frag_cache.h:220:
+	VM_BUG_ON(fragsz > nc->offset);

total: 0 errors, 8 warnings, 0 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 4297f4c9e21f ("mm: page_frag: introduce prepare/probe/commit 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, 8 warnings, 0 checks, 180 lines checked