VM: add common helper function to create the page tables

[GitHub/mt8127/android_kernel_alcatel_ttab.git] / mm / fremap.c

diff --git a/mm/fremap.c b/mm/fremap.c
index f851775e09c2a27f66763ef9e239c025f2ae8c6a..9f381e58bf4471faf6ba14bad1d93a118f12ffbc 100644 (file)
--- a/mm/fremap.c
+++ b/mm/fremap.c
@@ -55,20 +55,10 @@ int install_page(struct mm_struct *mm, struct vm_area_struct *vma,
        pgoff_t size;
        int err = -ENOMEM;
        pte_t *pte;
-       pmd_t *pmd;
-       pud_t *pud;
-       pgd_t *pgd;
        pte_t pte_val;
        spinlock_t *ptl;
 
-       pgd = pgd_offset(mm, addr);
-       pud = pud_alloc(mm, pgd, addr);
-       if (!pud)
-               goto out;
-       pmd = pmd_alloc(mm, pud, addr);
-       if (!pmd)
-               goto out;
-       pte = pte_alloc_map_lock(mm, pmd, addr, &ptl);
+       pte = get_locked_pte(mm, addr, &ptl);
        if (!pte)
                goto out;
 
@@ -110,20 +100,10 @@ int install_file_pte(struct mm_struct *mm, struct vm_area_struct *vma,
 {
        int err = -ENOMEM;
        pte_t *pte;
-       pmd_t *pmd;
-       pud_t *pud;
-       pgd_t *pgd;
        pte_t pte_val;
        spinlock_t *ptl;
 
-       pgd = pgd_offset(mm, addr);
-       pud = pud_alloc(mm, pgd, addr);
-       if (!pud)
-               goto out;
-       pmd = pmd_alloc(mm, pud, addr);
-       if (!pmd)
-               goto out;
-       pte = pte_alloc_map_lock(mm, pmd, addr, &ptl);
+       pte = get_locked_pte(mm, addr, &ptl);
        if (!pte)
                goto out;