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hugetlb: move definition of is_vm_hugetlb_page() to hugepage_inline.h

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is_vm_hugetlb_page() is a widely used inline function to insert hooks
into hugetlb code.
But we can't use it in pagemap.h because of circular dependency of
the header files. This patch removes this limitation.

Acked-by: Mel Gorman <mel@csn.ul.ie>
Acked-by: Fengguang Wu <fengguang.wu@intel.com>
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 2010-05-28 09:29:15 +09:00 • committed by Andi Kleen
parent 9fe6206f40
commit 8edf344c66
3 changed files with 24 additions and 10 deletions
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22
include/linux/hugetlb_inline.h Normal file
View file

@ -0,0 +1,22 @@
#ifndef _LINUX_HUGETLB_INLINE_H
#define _LINUX_HUGETLB_INLINE_H 1
#ifdef CONFIG_HUGETLBFS
#include <linux/mm.h>
static inline int is_vm_hugetlb_page(struct vm_area_struct *vma)
{
return vma->vm_flags & VM_HUGETLB;
}
#else
static inline int is_vm_hugetlb_page(struct vm_area_struct *vma)
{
return 0;
}
#endif
#endif