powerpc/mm: Don't send IPI to all cpus on THP updates

[linux-2.6-block.git] / arch / powerpc / mm / pgtable-radix.c

diff --git a/arch/powerpc/mm/pgtable-radix.c b/arch/powerpc/mm/pgtable-radix.c
index 5d8be076f8e5d64b9e0b73583bfea2a264808c74..1ee5452daf3aab167aa555a8fb8be035b1ff5d82 100644 (file)
--- a/arch/powerpc/mm/pgtable-radix.c
+++ b/arch/powerpc/mm/pgtable-radix.c
@@ -811,7 +811,7 @@ pmd_t radix__pmdp_collapse_flush(struct vm_area_struct *vma, unsigned long addre
        pmd_clear(pmdp);
 
        /*FIXME!!  Verify whether we need this kick below */
-       kick_all_cpus_sync();
+       serialize_against_pte_lookup(vma->vm_mm);
 
        radix__flush_tlb_collapsed_pmd(vma->vm_mm, address);
 
@@ -873,16 +873,16 @@ pmd_t radix__pmdp_huge_get_and_clear(struct mm_struct *mm,
        old = radix__pmd_hugepage_update(mm, addr, pmdp, ~0UL, 0);
        old_pmd = __pmd(old);
        /*
-        * Serialize against find_linux_pte_or_hugepte which does lock-less
+        * Serialize against find_current_mm_pte which does lock-less
         * lookup in page tables with local interrupts disabled. For huge pages
         * it casts pmd_t to pte_t. Since format of pte_t is different from
         * pmd_t we want to prevent transit from pmd pointing to page table
         * to pmd pointing to huge page (and back) while interrupts are disabled.
         * We clear pmd to possibly replace it with page table pointer in
         * different code paths. So make sure we wait for the parallel
-        * find_linux_pte_or_hugepage to finish.
+        * find_current_mm_pte to finish.
         */
-       kick_all_cpus_sync();
+       serialize_against_pte_lookup(mm);
        return old_pmd;
 }