Nothing outside of mm/memory.c references copy_pte_range.
linux/huge_mm.h prototypes it, but nothing uses that prototype. Commit
71e3aac0724ffe8918992d76acfe3aad7d8724a5 in January 2011 explicitly made
copy_pte_range non-static, but no commit ever introduced a caller for
copy_pte_range outside of mm/memory.c. Make the function static.
This eliminates a warning from gcc (-Wmissing-prototypes) and from
Sparse (-Wdecl).
mm/memory.c:917:5: warning: no previous prototype for ‘copy_pte_range’ [-Wmissing-prototypes]
Signed-off-by: Josh Triplett <josh@xxxxxxxxxxxxxxxx>
---
include/linux/huge_mm.h | 4 ----
mm/memory.c | 7 ++++---
2 files changed, 4 insertions(+), 7 deletions(-)
diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h
index 8ed2187..e10d4fe 100644
--- a/include/linux/huge_mm.h
+++ b/include/linux/huge_mm.h
@@ -87,10 +87,6 @@ extern int handle_pte_fault(struct mm_struct *mm,
#endif /* CONFIG_DEBUG_VM */
extern unsigned long transparent_hugepage_flags;
-extern int copy_pte_range(struct mm_struct *dst_mm, struct mm_struct *src_mm,
- pmd_t *dst_pmd, pmd_t *src_pmd,
- struct vm_area_struct *vma,
- unsigned long addr, unsigned long end);
extern int split_huge_page(struct page *page);
extern void __split_huge_page_pmd(struct mm_struct *mm, pmd_t *pmd);
#define split_huge_page_pmd(__mm, __pmd) \
diff --git a/mm/memory.c b/mm/memory.c
index fb135ba..fa106b3 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -914,9 +914,10 @@ out_set_pte:
return 0;
}
-int copy_pte_range(struct mm_struct *dst_mm, struct mm_struct *src_mm,
- pmd_t *dst_pmd, pmd_t *src_pmd, struct vm_area_struct *vma,
- unsigned long addr, unsigned long end)
+static int copy_pte_range(struct mm_struct *dst_mm, struct mm_struct *src_mm,
+ pmd_t *dst_pmd, pmd_t *src_pmd,
+ struct vm_area_struct *vma,
+ unsigned long addr, unsigned long end)
{
pte_t *orig_src_pte, *orig_dst_pte;
pte_t *src_pte, *dst_pte;
--
1.7.10.4
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