aboutsummaryrefslogtreecommitdiff
path: root/mm
diff options
context:
space:
mode:
authorvenkatesh.pallipadi@intel.com <venkatesh.pallipadi@intel.com>2008-12-19 13:47:28 -0800
committerH. Peter Anvin <hpa@zytor.com>2008-12-19 15:40:30 -0800
commit982d789ab76c8a11426852fec2fdf2f412e21c0c (patch)
tree41e6932764facecb11bc9ca831ffd67ded384d68 /mm
parentd87fe6607c31944f7572f965c1507ae77026c133 (diff)
downloadlinux-2.6.34-ux500-982d789ab76c8a11426852fec2fdf2f412e21c0c.tar.gz
x86: PAT: remove follow_pfnmap_pte in favor of follow_phys
Impact: Cleanup - removes a new function in favor of a recently modified older one. Replace follow_pfnmap_pte in pat code with follow_phys. follow_phys lso returns protection eliminating the need of pte_pgprot call. Using follow_phys also eliminates the need for pte_pa. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'mm')
-rw-r--r--mm/memory.c43
1 files changed, 0 insertions, 43 deletions
diff --git a/mm/memory.c b/mm/memory.c
index 79f28e35d4f..6b29f39a5a3 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -1168,49 +1168,6 @@ no_page_table:
return page;
}
-int follow_pfnmap_pte(struct vm_area_struct *vma, unsigned long address,
- pte_t *ret_ptep)
-{
- pgd_t *pgd;
- pud_t *pud;
- pmd_t *pmd;
- pte_t *ptep, pte;
- spinlock_t *ptl;
- struct page *page;
- struct mm_struct *mm = vma->vm_mm;
-
- if (!is_pfn_mapping(vma))
- goto err;
-
- page = NULL;
- pgd = pgd_offset(mm, address);
- if (pgd_none(*pgd) || unlikely(pgd_bad(*pgd)))
- goto err;
-
- pud = pud_offset(pgd, address);
- if (pud_none(*pud) || unlikely(pud_bad(*pud)))
- goto err;
-
- pmd = pmd_offset(pud, address);
- if (pmd_none(*pmd) || unlikely(pmd_bad(*pmd)))
- goto err;
-
- ptep = pte_offset_map_lock(mm, pmd, address, &ptl);
-
- pte = *ptep;
- if (!pte_present(pte))
- goto err_unlock;
-
- *ret_ptep = pte;
- pte_unmap_unlock(ptep, ptl);
- return 0;
-
-err_unlock:
- pte_unmap_unlock(ptep, ptl);
-err:
- return -EINVAL;
-}
-
/* Can we do the FOLL_ANON optimization? */
static inline int use_zero_page(struct vm_area_struct *vma)
{