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| author | Johannes Weiner <hannes@cmpxchg.org> | 2011-01-13 15:47:03 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-01-13 17:32:44 -0800 |
| commit | b36f5b0710e9e3b92484de32920fddcb17278664 (patch) | |
| tree | 823f5ee3ff0e18c67489bd8e525d83f3f7cf1b1a /mm/mprotect.c | |
| parent | c489f1257b8cacd4881a18da1e93659f934a8e98 (diff) | |
| download | linux-stable-b36f5b0710e9e3b92484de32920fddcb17278664.tar.gz linux-stable-b36f5b0710e9e3b92484de32920fddcb17278664.tar.bz2 linux-stable-b36f5b0710e9e3b92484de32920fddcb17278664.zip | |
thp: mprotect: pass vma down to page table walkers
Flushing the tlb for huge pmds requires the vma's anon_vma, so pass along
the vma instead of the mm, we can always get the latter when we need it.
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Reviewed-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/mprotect.c')
| -rw-r--r-- | mm/mprotect.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/mm/mprotect.c b/mm/mprotect.c index bd27db6b992b..9402080d0d4a 100644 --- a/mm/mprotect.c +++ b/mm/mprotect.c @@ -78,7 +78,7 @@ static void change_pte_range(struct mm_struct *mm, pmd_t *pmd, pte_unmap_unlock(pte - 1, ptl); } -static inline void change_pmd_range(struct mm_struct *mm, pud_t *pud, +static inline void change_pmd_range(struct vm_area_struct *vma, pud_t *pud, unsigned long addr, unsigned long end, pgprot_t newprot, int dirty_accountable) { @@ -88,14 +88,15 @@ static inline void change_pmd_range(struct mm_struct *mm, pud_t *pud, pmd = pmd_offset(pud, addr); do { next = pmd_addr_end(addr, end); - split_huge_page_pmd(mm, pmd); + split_huge_page_pmd(vma->vm_mm, pmd); if (pmd_none_or_clear_bad(pmd)) continue; - change_pte_range(mm, pmd, addr, next, newprot, dirty_accountable); + change_pte_range(vma->vm_mm, pmd, addr, next, newprot, + dirty_accountable); } while (pmd++, addr = next, addr != end); } -static inline void change_pud_range(struct mm_struct *mm, pgd_t *pgd, +static inline void change_pud_range(struct vm_area_struct *vma, pgd_t *pgd, unsigned long addr, unsigned long end, pgprot_t newprot, int dirty_accountable) { @@ -107,7 +108,8 @@ static inline void change_pud_range(struct mm_struct *mm, pgd_t *pgd, next = pud_addr_end(addr, end); if (pud_none_or_clear_bad(pud)) continue; - change_pmd_range(mm, pud, addr, next, newprot, dirty_accountable); + change_pmd_range(vma, pud, addr, next, newprot, + dirty_accountable); } while (pud++, addr = next, addr != end); } @@ -127,7 +129,8 @@ static void change_protection(struct vm_area_struct *vma, next = pgd_addr_end(addr, end); if (pgd_none_or_clear_bad(pgd)) continue; - change_pud_range(mm, pgd, addr, next, newprot, dirty_accountable); + change_pud_range(vma, pgd, addr, next, newprot, + dirty_accountable); } while (pgd++, addr = next, addr != end); flush_tlb_range(vma, start, end); } |