CHECK: extern prototypes should be avoided in .h files
#53: FILE: include/linux/khugepaged.h:16:
+extern void khugepaged_enter_vma(struct vm_area_struct *vma);

CHECK: extern prototypes should be avoided in .h files
#54: FILE: include/linux/khugepaged.h:17:
+extern void khugepaged_enter_mm(struct mm_struct *mm);

CHECK: Please use a blank line after function/struct/union/enum declarations
#64: FILE: include/linux/khugepaged.h:41:
 }
+static inline void khugepaged_enter_vma(struct vm_area_struct *vma)

CHECK: Please use a blank line after function/struct/union/enum declarations
#67: FILE: include/linux/khugepaged.h:44:
+}
+static inline void khugepaged_enter_mm(struct mm_struct *mm)

WARNING: line length of 84 exceeds 80 columns
#124: FILE: mm/khugepaged.c:466:
+	if (!thp_vma_allowable_order(vma, vma->vm_flags, TVA_KHUGEPAGED, PMD_ORDER))

total: 0 errors, 1 warnings, 4 checks, 107 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 e21754639420 ("mm: thp: remove vm_flags parameter from khugepaged_enter_vma()") has style problems, please review.

NOTE: Ignored message types: ALLOC_SIZEOF_STRUCT BAD_REPORTED_BY_LINK CAMELCASE COMMIT_LOG_LONG_LINE FILE_PATH_CHANGES 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, 1 warnings, 4 checks, 107 lines checked