parisc: Fix ptrace syscall number and return value modification

[karo-tx-linux.git] / mm / huge_memory.c

diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index 08fc0ba2207e555a9c734524cd607dc8f53e644a..e10a4fee88d2bcf1f4bba89285391cbadfb96098 100644 (file)
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -1700,7 +1700,8 @@ bool move_huge_pmd(struct vm_area_struct *vma, struct vm_area_struct *new_vma,
                pmd = pmdp_huge_get_and_clear(mm, old_addr, old_pmd);
                VM_BUG_ON(!pmd_none(*new_pmd));
 
-               if (pmd_move_must_withdraw(new_ptl, old_ptl)) {
+               if (pmd_move_must_withdraw(new_ptl, old_ptl) &&
+                               vma_is_anonymous(vma)) {
                        pgtable_t pgtable;
                        pgtable = pgtable_trans_huge_withdraw(mm, old_pmd);
                        pgtable_trans_huge_deposit(mm, new_pmd, pgtable);
@@ -2835,6 +2836,7 @@ static void __split_huge_pmd_locked(struct vm_area_struct *vma, pmd_t *pmd,
        pgtable_t pgtable;
        pmd_t _pmd;
        bool young, write, dirty;
+       unsigned long addr;
        int i;
 
        VM_BUG_ON(haddr & ~HPAGE_PMD_MASK);
@@ -2860,10 +2862,11 @@ static void __split_huge_pmd_locked(struct vm_area_struct *vma, pmd_t *pmd,
        young = pmd_young(*pmd);
        dirty = pmd_dirty(*pmd);
 
+       pmdp_huge_split_prepare(vma, haddr, pmd);
        pgtable = pgtable_trans_huge_withdraw(mm, pmd);
        pmd_populate(mm, &_pmd, pgtable);
 
-       for (i = 0; i < HPAGE_PMD_NR; i++, haddr += PAGE_SIZE) {
+       for (i = 0, addr = haddr; i < HPAGE_PMD_NR; i++, addr += PAGE_SIZE) {
                pte_t entry, *pte;
                /*
                 * Note that NUMA hinting access restrictions are not
@@ -2884,9 +2887,9 @@ static void __split_huge_pmd_locked(struct vm_area_struct *vma, pmd_t *pmd,
                }
                if (dirty)
                        SetPageDirty(page + i);
-               pte = pte_offset_map(&_pmd, haddr);
+               pte = pte_offset_map(&_pmd, addr);
                BUG_ON(!pte_none(*pte));
-               set_pte_at(mm, haddr, pte, entry);
+               set_pte_at(mm, addr, pte, entry);
                atomic_inc(&page[i]._mapcount);
                pte_unmap(pte);
        }
@@ -2936,7 +2939,7 @@ static void __split_huge_pmd_locked(struct vm_area_struct *vma, pmd_t *pmd,
        pmd_populate(mm, pmd, pgtable);
 
        if (freeze) {
-               for (i = 0; i < HPAGE_PMD_NR; i++, haddr += PAGE_SIZE) {
+               for (i = 0; i < HPAGE_PMD_NR; i++) {
                        page_remove_rmap(page + i, false);
                        put_page(page + i);
                }