disable kernel build waring

hc

2024-05-10 093a6c67005148ae32a5c9e4553491b9f5c2457b

 kernel/include/linux/khugepaged.h
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@@ -3,6 +3,7 @@
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 #define _LINUX_KHUGEPAGED_H
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 #include <linux/sched/coredump.h> /* MMF_VM_HUGEPAGE */
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+#include <linux/shmem_fs.h>
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 #ifdef CONFIG_TRANSPARENT_HUGEPAGE
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@@ -16,6 +17,14 @@
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 extern int khugepaged_enter_vma_merge(struct vm_area_struct *vma,
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 				      unsigned long vm_flags);
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 extern void khugepaged_min_free_kbytes_update(void);
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+#ifdef CONFIG_SHMEM
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+extern void collapse_pte_mapped_thp(struct mm_struct *mm, unsigned long addr);
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+#else
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+static inline void collapse_pte_mapped_thp(struct mm_struct *mm,
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+					   unsigned long addr)
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+{
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+}
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+#endif
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 #define khugepaged_enabled()					       \
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 	(transparent_hugepage_flags &				       \
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@@ -49,6 +58,7 @@
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 {
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 	if (!test_bit(MMF_VM_HUGEPAGE, &vma->vm_mm->flags))
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 		if ((khugepaged_always() ||
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+		     (shmem_file(vma->vm_file) && shmem_huge_enabled(vma)) ||
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 		     (khugepaged_req_madv() && (vm_flags & VM_HUGEPAGE))) &&
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 		    !(vm_flags & VM_NOHUGEPAGE) &&
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 		    !test_bit(MMF_DISABLE_THP, &vma->vm_mm->flags))
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@@ -74,6 +84,10 @@
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 {
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 	return 0;
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 }
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+static inline void collapse_pte_mapped_thp(struct mm_struct *mm,
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+					   unsigned long addr)
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+{
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+}
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 static inline void khugepaged_min_free_kbytes_update(void)
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 {