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VM: add common helper function to create the page tables

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This logic was duplicated four times, for no good reason.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Linus Torvalds
2005-11-29 14:03:14 -08:00
parent 4168f7a318
commit c9cfcddfd6
4 changed files with 19 additions and 45 deletions
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fs/exec.c
+1 -11
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@@ -306,9 +306,6 @@ void install_arg_page(struct vm_area_struct *vma,
struct page *page, unsigned long address)
{
struct mm_struct *mm = vma->vm_mm;
pgd_t * pgd;
pud_t * pud;
pmd_t * pmd;
pte_t * pte;
spinlock_t *ptl;
@@ -316,14 +313,7 @@ void install_arg_page(struct vm_area_struct *vma,
goto out;
flush_dcache_page(page);
pgd = pgd_offset(mm, address);
pud = pud_alloc(mm, pgd, address);
if (!pud)
goto out;
pmd = pmd_alloc(mm, pud, address);
if (!pmd)
goto out;
pte = pte_alloc_map_lock(mm, pmd, address, &ptl);
pte = get_locked_pte(mm, address, &ptl);
if (!pte)
goto out;
if (!pte_none(*pte)) {