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| author |   Ingo Molnar <mingo@kernel.org> | 2013-01-24 12:47:48 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2013-01-24 12:47:48 +0100 |
| commit | befddb21c845f8fb49e637997891ef97c6a869dc (patch) | |
| tree | 0e7629123184f2dd50291ad6d477b894175f0f26 /mm/pgtable-generic.c | |
| parent | genirq: Avoid deadlock in spurious handling (diff) | |
| parent | Linux 3.8-rc4 (diff) | |
| download | linux-dev-befddb21c845f8fb49e637997891ef97c6a869dc.tar.xz linux-dev-befddb21c845f8fb49e637997891ef97c6a869dc.zip | |
Merge tag 'v3.8-rc4' into irq/core
Merge Linux 3.8-rc4 before pulling in new commits - we were on an old v3.7 base.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'mm/pgtable-generic.c')
| -rw-r--r-- | mm/pgtable-generic.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/mm/pgtable-generic.c b/mm/pgtable-generic.c index e642627da6b7..0c8323fe6c8f 100644 --- a/mm/pgtable-generic.c +++ b/mm/pgtable-generic.c @@ -12,8 +12,8 @@ #ifndef __HAVE_ARCH_PTEP_SET_ACCESS_FLAGS /* - * Only sets the access flags (dirty, accessed, and - * writable). Furthermore, we know it always gets set to a "more + * Only sets the access flags (dirty, accessed), as well as write + * permission. Furthermore, we know it always gets set to a "more * permissive" setting, which allows most architectures to optimize * this. We return whether the PTE actually changed, which in turn * instructs the caller to do things like update__mmu_cache. This @@ -27,7 +27,7 @@ int ptep_set_access_flags(struct vm_area_struct *vma, int changed = !pte_same(*ptep, entry); if (changed) { set_pte_at(vma->vm_mm, address, ptep, entry); - flush_tlb_page(vma, address); + flush_tlb_fix_spurious_fault(vma, address); } return changed; } @@ -88,7 +88,8 @@ pte_t ptep_clear_flush(struct vm_area_struct *vma, unsigned long address, { pte_t pte; pte = ptep_get_and_clear((vma)->vm_mm, address, ptep); - flush_tlb_page(vma, address); + if (pte_accessible(pte)) + flush_tlb_page(vma, address); return pte; } #endif |