unsigned long hugetlb_get_unmapped_area(struct file *file, unsigned long addr, unsigned long len, unsigned long pgoff, unsigned long flags) { struct hstate *h = hstate_file(file); struct mm_struct *mm = current->mm; struct vm_area_struct *vma; if (len & ~huge_page_mask(h)) return -EINVAL; if (len > TASK_SIZE) return -ENOMEM; if (flags & MAP_FIXED) { if (prepare_hugepage_range(file, addr, len)) return -EINVAL; return addr; } if (addr) { addr = ALIGN(addr, huge_page_size(h)); vma = find_vma(mm, addr); if (TASK_SIZE - len >= addr && (!vma || addr + len <= vma->vm_start)) return addr; } if (current->mm->get_unmapped_area == arch_get_unmapped_area) return hugetlb_get_unmapped_area_bottomup(file, addr, len, pgoff, flags); else return hugetlb_get_unmapped_area_topdown(file, addr, len, pgoff, flags); }
unsigned long hugetlb_get_unmapped_area(struct file *file, unsigned long addr, unsigned long len, unsigned long pgoff, unsigned long flags) { struct mm_struct *mm = current->mm; struct vm_area_struct *vma; if (len & ~HPAGE_MASK) return -EINVAL; if (len > TASK_SIZE) return -ENOMEM; if (addr) { addr = ALIGN(addr, HPAGE_SIZE); vma = find_vma(mm, addr); if (TASK_SIZE - len >= addr && (!vma || addr + len <= vma->vm_start)) return addr; } if (mm->get_unmapped_area == arch_get_unmapped_area) return hugetlb_get_unmapped_area_bottomup(file, addr, len, pgoff, flags); else return hugetlb_get_unmapped_area_topdown(file, addr, len, pgoff, flags); }
unsigned long hugetlb_get_unmapped_area(struct file *file, unsigned long addr, unsigned long len, unsigned long pgoff, unsigned long flags) { struct mm_struct *mm = current->mm; struct vm_area_struct *vma; unsigned long task_size = TASK_SIZE; if (test_thread_flag(TIF_32BIT)) task_size = STACK_TOP32; if (len & ~HPAGE_MASK) return -EINVAL; if (len > task_size) return -ENOMEM; if (addr) { addr = ALIGN(addr, HPAGE_SIZE); vma = find_vma(mm, addr); if (task_size - len >= addr && (!vma || addr + len <= vma->vm_start)) return addr; } if (mm->get_unmapped_area == arch_get_unmapped_area) return hugetlb_get_unmapped_area_bottomup(file, addr, len, pgoff, flags); else return hugetlb_get_unmapped_area_topdown(file, addr, len, pgoff, flags); }
unsigned long hugetlb_get_unmapped_area(struct file *file, unsigned long addr, unsigned long len, unsigned long pgoff, unsigned long flags) { struct mm_struct *mm = current->mm; struct vm_area_struct *vma; unsigned long task_size = TASK_SIZE; if (test_thread_flag(TIF_32BIT)) task_size = STACK_TOP32; if (len & ~HPAGE_MASK) return -EINVAL; if (len > task_size) return -ENOMEM; if (flags & MAP_FIXED) { if (prepare_hugepage_range(file, addr, len)) return -EINVAL; return addr; } if (addr) { addr = ALIGN(addr, HPAGE_SIZE); vma = find_vma(mm, addr); if (task_size - len >= addr && check_heap_stack_gap(vma, addr, len)) return addr; } if (mm->get_unmapped_area == arch_get_unmapped_area) return hugetlb_get_unmapped_area_bottomup(file, addr, len, pgoff, flags); else return hugetlb_get_unmapped_area_topdown(file, addr, len, pgoff, flags); }
unsigned long hugetlb_get_unmapped_area(struct file *file, unsigned long addr, unsigned long len, unsigned long pgoff, unsigned long flags) { struct hstate *h = hstate_file(file); struct mm_struct *mm = current->mm; struct vm_area_struct *vma; unsigned long task_size = TASK_SIZE; if (test_thread_flag(TIF_32BIT)) task_size = STACK_TOP32; if (len & ~huge_page_mask(h)) return -EINVAL; if (len > task_size) return -ENOMEM; if (flags & MAP_FIXED) { if (prepare_hugepage_range(file, addr, len)) return -EINVAL; return addr; } if (addr) { addr = ALIGN(addr, huge_page_size(h)); vma = find_vma(mm, addr); if (task_size - len >= addr && (!vma || addr + len <= vm_start_gap(vma))) return addr; } if (mm->get_unmapped_area == arch_get_unmapped_area) return hugetlb_get_unmapped_area_bottomup(file, addr, len, pgoff, flags); else return hugetlb_get_unmapped_area_topdown(file, addr, len, pgoff, flags); }