linux-kernel - [PATCH] mm: make copy_pte

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Message-Id: <1404202674-11648-1-git-send-email-jmarchan@redhat.com>
Date:	Tue,  1 Jul 2014 10:17:54 +0200
From:	"Jerome Marchand" <jmarchan@...hat.com>
To:	linux-mm@...ck.org
Cc:	linux-kernel@...r.kernel.org,
	Andrea Arcangeli <aarcange@...hat.com>
Subject: [PATCH] mm: make copy_pte_range static again

Commit 71e3aac (thp: transparent hugepage core) adds copy_pte_range
prototype to huge_mm.h. I'm not sure why (or if) this function have
been used outside of memory.c, but it currently isn't.
This patch makes copy_pte_range() static again.

Signed-off-by: Jerome Marchand <jmarchan@...hat.com>
---
 include/linux/huge_mm.h | 4 ----
 mm/memory.c             | 2 +-
 2 files changed, 1 insertion(+), 5 deletions(-)

diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h
index b826239..63579cb 100644
--- a/include/linux/huge_mm.h
+++ b/include/linux/huge_mm.h
@@ -93,10 +93,6 @@ extern bool is_vma_temporary_stack(struct vm_area_struct *vma);
 #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_to_list(struct page *page, struct list_head *list);
 static inline int split_huge_page(struct page *page)
 {
diff --git a/mm/memory.c b/mm/memory.c
index 09e2cd0..13141ae 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -884,7 +884,7 @@ out_set_pte:
 	return 0;
 }
 
-int copy_pte_range(struct mm_struct *dst_mm, struct mm_struct *src_mm,
+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)
 {
-- 
1.9.3

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