==========
checkpatch - FAILED

WARNING: line length of 88 exceeds 80 columns
#40: FILE: include/linux/page_frag_cache.h:76:
+static inline unsigned int page_frag_cache_page_offset(const struct page_frag_cache *nc)

WARNING: line length of 92 exceeds 80 columns
#52: FILE: include/linux/page_frag_cache.h:134:
+static inline bool __page_frag_refill_align(struct page_frag_cache *nc, unsigned int fragsz,

WARNING: line length of 84 exceeds 80 columns
#53: FILE: include/linux/page_frag_cache.h:135:
+					    struct page_frag *pfrag, gfp_t gfp_mask,

WARNING: line length of 90 exceeds 80 columns
#56: FILE: include/linux/page_frag_cache.h:138:
+	if (unlikely(!__page_frag_cache_prepare(nc, fragsz, pfrag, gfp_mask, align_mask)))

WARNING: line length of 90 exceeds 80 columns
#63: FILE: include/linux/page_frag_cache.h:145:
+static inline bool page_frag_refill_align(struct page_frag_cache *nc, unsigned int fragsz,

WARNING: line length of 82 exceeds 80 columns
#64: FILE: include/linux/page_frag_cache.h:146:
+					  struct page_frag *pfrag, gfp_t gfp_mask,

WARNING: line length of 84 exceeds 80 columns
#71: FILE: include/linux/page_frag_cache.h:153:
+static inline bool page_frag_refill(struct page_frag_cache *nc, unsigned int fragsz,

WARNING: line length of 84 exceeds 80 columns
#83: FILE: include/linux/page_frag_cache.h:165:
+	return !!__page_frag_cache_prepare(nc, fragsz, pfrag, gfp_mask, align_mask);

WARNING: line length of 85 exceeds 80 columns
#93: FILE: include/linux/page_frag_cache.h:175:
+	return __page_frag_refill_prepare_align(nc, fragsz, pfrag, gfp_mask, -align);

WARNING: line length of 82 exceeds 80 columns
#101: FILE: include/linux/page_frag_cache.h:183:
+	return __page_frag_refill_prepare_align(nc, fragsz, pfrag, gfp_mask, ~0u);

WARNING: line length of 86 exceeds 80 columns
#104: FILE: include/linux/page_frag_cache.h:186:
+static inline void *__page_frag_alloc_refill_prepare_align(struct page_frag_cache *nc,

WARNING: line length of 83 exceeds 80 columns
#106: FILE: include/linux/page_frag_cache.h:188:
+							   struct page_frag *pfrag,

WARNING: line length of 83 exceeds 80 columns
#108: FILE: include/linux/page_frag_cache.h:190:
+							   unsigned int align_mask)

WARNING: line length of 82 exceeds 80 columns
#110: FILE: include/linux/page_frag_cache.h:192:
+        return __page_frag_cache_prepare(nc, fragsz, pfrag, gfp_mask, align_mask);

ERROR: code indent should use tabs where possible
#110: FILE: include/linux/page_frag_cache.h:192:
+        return __page_frag_cache_prepare(nc, fragsz, pfrag, gfp_mask, align_mask);$

WARNING: please, no spaces at the start of a line
#110: FILE: include/linux/page_frag_cache.h:192:
+        return __page_frag_cache_prepare(nc, fragsz, pfrag, gfp_mask, align_mask);$

WARNING: line length of 84 exceeds 80 columns
#113: FILE: include/linux/page_frag_cache.h:195:
+static inline void *page_frag_alloc_refill_prepare_align(struct page_frag_cache *nc,

WARNING: line length of 81 exceeds 80 columns
#115: FILE: include/linux/page_frag_cache.h:197:
+							 struct page_frag *pfrag,

WARNING: line length of 91 exceeds 80 columns
#120: FILE: include/linux/page_frag_cache.h:202:
+	return __page_frag_alloc_refill_prepare_align(nc, fragsz, pfrag, gfp_mask, -align);

WARNING: line length of 88 exceeds 80 columns
#128: FILE: include/linux/page_frag_cache.h:210:
+	return __page_frag_alloc_refill_prepare_align(nc, fragsz, pfrag, gfp_mask, ~0u);

WARNING: line length of 84 exceeds 80 columns
#131: FILE: include/linux/page_frag_cache.h:213:
+static inline void *__page_frag_alloc_refill_probe_align(struct page_frag_cache *nc,

WARNING: line length of 81 exceeds 80 columns
#133: FILE: include/linux/page_frag_cache.h:215:
+							 struct page_frag *pfrag,

WARNING: line length of 81 exceeds 80 columns
#134: FILE: include/linux/page_frag_cache.h:216:
+							 unsigned int align_mask)

WARNING: line length of 88 exceeds 80 columns
#165: FILE: include/linux/page_frag_cache.h:247:
+static inline void page_frag_commit(struct page_frag_cache *nc, struct page_frag *pfrag,

WARNING: line length of 88 exceeds 80 columns
#172: FILE: include/linux/page_frag_cache.h:254:
+					  struct page_frag *pfrag, unsigned int used_sz)

WARNING: line length of 89 exceeds 80 columns
#177: FILE: include/linux/page_frag_cache.h:259:
+static inline void page_frag_alloc_abort(struct page_frag_cache *nc, unsigned int fragsz)

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
#179: FILE: include/linux/page_frag_cache.h:261:
+	VM_BUG_ON(fragsz > nc->offset);

total: 1 errors, 26 warnings, 0 checks, 150 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.

NOTE: Whitespace errors detected.
      You may wish to use scripts/cleanpatch or scripts/cleanfile

Commit cda641c85eb5 ("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.