Commit 27a85ef1 authored by David Gibson's avatar David Gibson Committed by Linus Torvalds
Browse files

[PATCH] hugepage: Make {alloc,free}_huge_page() local



Originally, mm/hugetlb.c just handled the hugepage physical allocation path
and its {alloc,free}_huge_page() functions were used from the arch specific
hugepage code.  These days those functions are only used with mm/hugetlb.c
itself.  Therefore, this patch makes them static and removes their
prototypes from hugetlb.h.  This requires a small rearrangement of code in
mm/hugetlb.c to avoid a forward declaration.

This patch causes no regressions on the libhugetlbfs testsuite (ppc64,
POWER5).
Signed-off-by: default avatarDavid Gibson <dwg@au1.ibm.com>
Cc: William Lee Irwin III <wli@holomorphy.com>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent b45b5bd6
......@@ -21,8 +21,6 @@ int hugetlb_prefault(struct address_space *, struct vm_area_struct *);
int hugetlb_report_meminfo(char *);
int hugetlb_report_node_meminfo(int, char *);
unsigned long hugetlb_total_pages(void);
struct page *alloc_huge_page(struct vm_area_struct *, unsigned long);
void free_huge_page(struct page *);
int hugetlb_fault(struct mm_struct *mm, struct vm_area_struct *vma,
unsigned long address, int write_access);
......@@ -97,8 +95,6 @@ static inline unsigned long hugetlb_total_pages(void)
#define is_hugepage_only_range(mm, addr, len) 0
#define hugetlb_free_pgd_range(tlb, addr, end, floor, ceiling) \
do { } while (0)
#define alloc_huge_page(vma, addr) ({ NULL; })
#define free_huge_page(p) ({ (void)(p); BUG(); })
#define hugetlb_fault(mm, vma, addr, write) ({ BUG(); 0; })
#define hugetlb_change_protection(vma, address, end, newprot)
......
......@@ -88,6 +88,17 @@ static struct page *dequeue_huge_page(struct vm_area_struct *vma,
return page;
}
static void free_huge_page(struct page *page)
{
BUG_ON(page_count(page));
INIT_LIST_HEAD(&page->lru);
spin_lock(&hugetlb_lock);
enqueue_huge_page(page);
spin_unlock(&hugetlb_lock);
}
static int alloc_fresh_huge_page(void)
{
static int nid = 0;
......@@ -107,18 +118,8 @@ static int alloc_fresh_huge_page(void)
return 0;
}
void free_huge_page(struct page *page)
{
BUG_ON(page_count(page));
INIT_LIST_HEAD(&page->lru);
spin_lock(&hugetlb_lock);
enqueue_huge_page(page);
spin_unlock(&hugetlb_lock);
}
struct page *alloc_huge_page(struct vm_area_struct *vma, unsigned long addr)
static struct page *alloc_huge_page(struct vm_area_struct *vma,
unsigned long addr)
{
struct inode *inode = vma->vm_file->f_dentry->d_inode;
struct page *page;
......
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