This patch makes the function make_huge_pte non-static, so it can be used
by drivers that want to mmap huge pages. Consequently, a prototype for the
function is added to hugetlb.h. Since I was looking here, I noticed some
coding style problems in the function and fix them with this patch.
Signed-off-by: Mark Rustad <[email protected]>
include/linux/hugetlb.h | 1 +
mm/hugetlb.c | 13 ++++++-------
2 files changed, 7 insertions(+), 7 deletions(-)
--- a/include/linux/hugetlb.h 2005-11-28 15:58:37.000000000 -0600
+++ b/include/linux/hugetlb.h 2005-12-08 10:38:36.099028314 -0600
@@ -24,6 +24,7 @@ int is_hugepage_mem_enough(size_t);
unsigned long hugetlb_total_pages(void);
struct page *alloc_huge_page(void);
void free_huge_page(struct page *);
+pte_t make_huge_pte(struct vm_area_struct *vma, struct page *page);
int hugetlb_fault(struct mm_struct *mm, struct vm_area_struct *vma,
unsigned long address, int write_access);
--- a/mm/hugetlb.c 2005-11-29 12:11:43.794928597 -0600
+++ b/mm/hugetlb.c 2005-12-08 10:43:43.983294767 -0600
@@ -261,16 +261,15 @@ struct vm_operations_struct hugetlb_vm_o
.nopage = hugetlb_nopage,
};
-static pte_t make_huge_pte(struct vm_area_struct *vma, struct page *page)
+pte_t make_huge_pte(struct vm_area_struct *vma, struct page *page)
{
pte_t entry;
- if (vma->vm_flags & VM_WRITE) {
- entry =
- pte_mkwrite(pte_mkdirty(mk_pte(page, vma->vm_page_prot)));
- } else {
- entry = pte_wrprotect(mk_pte(page, vma->vm_page_prot));
- }
+ entry = mk_pte(page, vma->vm_page_prot);
+ if (vma->vm_flags & VM_WRITE)
+ entry = pte_mkwrite(pte_mkdirty(entry));
+ else
+ entry = pte_wrprotect(entry);
entry = pte_mkyoung(entry);
entry = pte_mkhuge(entry);
--
Mark Rustad, [email protected]
-
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