unsigned long addr;
struct file *file = get_file(vma->vm_file);
- addr = mmap_region(file, start, size,
- vma->vm_flags, pgoff);
+ vm_flags = vma->vm_flags;
+ if (!(flags & MAP_NONBLOCK))
+ vm_flags |= VM_POPULATE;
+ addr = mmap_region(file, start, size, vm_flags, pgoff);
fput(file);
if (IS_ERR_VALUE(addr)) {
err = addr;
mutex_unlock(&mapping->i_mmap_mutex);
}
+ if (!(flags & MAP_NONBLOCK) && !(vma->vm_flags & VM_POPULATE)) {
+ if (!has_write_lock)
+ goto get_write_lock;
+ vma->vm_flags |= VM_POPULATE;
+ }
+
if (vma->vm_flags & VM_LOCKED) {
/*
* drop PG_Mlocked flag for over-mapped range