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authorNaoya Horiguchi <n-horiguchi@ah.jp.nec.com>2010-05-27 20:29:15 -0400
committerAndi Kleen <ak@linux.intel.com>2010-08-11 03:20:41 -0400
commit8edf344c66a3f214d709dad1421c29d678915b3f (patch)
tree0b976d0c52ac5efddcd30c8cb60e44b2cc0029e2 /include
parent9fe6206f400646a2322096b56c59891d530e8d51 (diff)
hugetlb: move definition of is_vm_hugetlb_page() to hugepage_inline.h
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>
Diffstat (limited to 'include')
-rw-r--r--include/linux/hugetlb.h11
-rw-r--r--include/linux/hugetlb_inline.h22
-rw-r--r--include/linux/pagemap.h1
3 files changed, 24 insertions, 10 deletions
diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h
index 78b4bc64c006..d47a7c41745d 100644
--- a/include/linux/hugetlb.h
+++ b/include/linux/hugetlb.h
@@ -2,6 +2,7 @@
2#define _LINUX_HUGETLB_H 2#define _LINUX_HUGETLB_H
3 3
4#include <linux/fs.h> 4#include <linux/fs.h>
5#include <linux/hugetlb_inline.h>
5 6
6struct ctl_table; 7struct ctl_table;
7struct user_struct; 8struct user_struct;
@@ -14,11 +15,6 @@ struct user_struct;
14 15
15int PageHuge(struct page *page); 16int PageHuge(struct page *page);
16 17
17static inline int is_vm_hugetlb_page(struct vm_area_struct *vma)
18{
19 return vma->vm_flags & VM_HUGETLB;
20}
21
22void reset_vma_resv_huge_pages(struct vm_area_struct *vma); 18void reset_vma_resv_huge_pages(struct vm_area_struct *vma);
23int hugetlb_sysctl_handler(struct ctl_table *, int, void __user *, size_t *, loff_t *); 19int hugetlb_sysctl_handler(struct ctl_table *, int, void __user *, size_t *, loff_t *);
24int hugetlb_overcommit_handler(struct ctl_table *, int, void __user *, size_t *, loff_t *); 20int hugetlb_overcommit_handler(struct ctl_table *, int, void __user *, size_t *, loff_t *);
@@ -77,11 +73,6 @@ static inline int PageHuge(struct page *page)
77 return 0; 73 return 0;
78} 74}
79 75
80static inline int is_vm_hugetlb_page(struct vm_area_struct *vma)
81{
82 return 0;
83}
84
85static inline void reset_vma_resv_huge_pages(struct vm_area_struct *vma) 76static inline void reset_vma_resv_huge_pages(struct vm_area_struct *vma)
86{ 77{
87} 78}
diff --git a/include/linux/hugetlb_inline.h b/include/linux/hugetlb_inline.h
new file mode 100644
index 000000000000..cf00b6df53dc
--- /dev/null
+++ b/include/linux/hugetlb_inline.h
@@ -0,0 +1,22 @@
1#ifndef _LINUX_HUGETLB_INLINE_H
2#define _LINUX_HUGETLB_INLINE_H 1
3
4#ifdef CONFIG_HUGETLBFS
5
6#include <linux/mm.h>
7
8static inline int is_vm_hugetlb_page(struct vm_area_struct *vma)
9{
10 return vma->vm_flags & VM_HUGETLB;
11}
12
13#else
14
15static inline int is_vm_hugetlb_page(struct vm_area_struct *vma)
16{
17 return 0;
18}
19
20#endif
21
22#endif
diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h
index 3c62ed408492..b2bd2bae9775 100644
--- a/include/linux/pagemap.h
+++ b/include/linux/pagemap.h
@@ -13,6 +13,7 @@
13#include <linux/gfp.h> 13#include <linux/gfp.h>
14#include <linux/bitops.h> 14#include <linux/bitops.h>
15#include <linux/hardirq.h> /* for in_interrupt() */ 15#include <linux/hardirq.h> /* for in_interrupt() */
16#include <linux/hugetlb_inline.h>
16 17
17/* 18/*
18 * Bits in mapping->flags. The lower __GFP_BITS_SHIFT bits are the page 19 * Bits in mapping->flags. The lower __GFP_BITS_SHIFT bits are the page