arm64,ia64,ppc,s390,sh,tile,um,x86,mm: remove default gate area

[cascardo/linux.git] / mm / memory.c

diff --git a/mm/memory.c b/mm/memory.c
index 6d76487..ab3537b 100644 (file)
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -1292,7 +1292,6 @@ static void unmap_page_range(struct mmu_gather *tlb,
                details = NULL;
 
        BUG_ON(addr >= end);
-       mem_cgroup_uncharge_start();
        tlb_start_vma(tlb, vma);
        pgd = pgd_offset(vma->vm_mm, addr);
        do {
@@ -1302,7 +1301,6 @@ static void unmap_page_range(struct mmu_gather *tlb,
                next = zap_pud_range(tlb, vma, pgd, addr, next, details);
        } while (pgd++, addr = next, addr != end);
        tlb_end_vma(tlb, vma);
-       mem_cgroup_uncharge_end();
 }
 
 
@@ -3432,44 +3430,6 @@ int __pmd_alloc(struct mm_struct *mm, pud_t *pud, unsigned long address)
 }
 #endif /* __PAGETABLE_PMD_FOLDED */
 
-#if !defined(__HAVE_ARCH_GATE_AREA)
-
-#if defined(AT_SYSINFO_EHDR)
-static struct vm_area_struct gate_vma;
-
-static int __init gate_vma_init(void)
-{
-       gate_vma.vm_mm = NULL;
-       gate_vma.vm_start = FIXADDR_USER_START;
-       gate_vma.vm_end = FIXADDR_USER_END;
-       gate_vma.vm_flags = VM_READ | VM_MAYREAD | VM_EXEC | VM_MAYEXEC;
-       gate_vma.vm_page_prot = __P101;
-
-       return 0;
-}
-__initcall(gate_vma_init);
-#endif
-
-struct vm_area_struct *get_gate_vma(struct mm_struct *mm)
-{
-#ifdef AT_SYSINFO_EHDR
-       return &gate_vma;
-#else
-       return NULL;
-#endif
-}
-
-int in_gate_area_no_mm(unsigned long addr)
-{
-#ifdef AT_SYSINFO_EHDR
-       if ((addr >= FIXADDR_USER_START) && (addr < FIXADDR_USER_END))
-               return 1;
-#endif
-       return 0;
-}
-
-#endif /* __HAVE_ARCH_GATE_AREA */
-
 static int __follow_pte(struct mm_struct *mm, unsigned long address,
                pte_t **ptepp, spinlock_t **ptlp)
 {