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Fix build error with !CONFIG_MIGRATION 

migrate_huge_page_move_mapping() is declared as "extern int ..."
in include/linux/migrate.h for !CONFIG_MIGRATION,
which causes the build error like below:

  mm/mprotect.o: In function `migrate_huge_page_move_mapping':
  mprotect.c:(.text+0x0): multiple definition of `migrate_huge_page_move_mapping'
  mm/shmem.o:shmem.c:(.text+0x0): first defined here
  mm/rmap.o: In function `migrate_huge_page_move_mapping':
  rmap.c:(.text+0x0): multiple definition of `migrate_huge_page_move_mapping'
  mm/shmem.o:shmem.c:(.text+0x0): first defined here

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
This commit is contained in:
Naoya Horiguchi 2010-09-30 11:54:51 +09:00 committed by Andi Kleen
parent d5bd910696
commit 6f39ce056a
1 changed files with 1 additions and 1 deletions
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2
include/linux/migrate.h
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@ -50,7 +50,7 @@ static inline int migrate_vmas(struct mm_struct *mm,
static inline void migrate_page_copy(struct page *newpage,
struct page *page) {}
extern int migrate_huge_page_move_mapping(struct address_space *mapping,
static inline int migrate_huge_page_move_mapping(struct address_space *mapping,
struct page *newpage, struct page *page)
{
return -ENOSYS;