int ret;
/*
- * vma alignment has already been checked by prepare_hugepage_range.
- * If you add any error returns here, do so after setting VM_HUGETLB,
- * so is_vm_hugetlb_page tests below unmap_region go the right way
- * when do_mmap_pgoff unwinds (may be important on powerpc and ia64).
+ * vma address alignment (but not the pgoff alignment) has
+ * already been checked by prepare_hugepage_range. If you add
+ * any error returns here, do so after setting VM_HUGETLB, so
+ * is_vm_hugetlb_page tests below unmap_region go the right
+ * way when do_mmap_pgoff unwinds (may be important on powerpc
+ * and ia64).
*/
vma->vm_flags |= VM_HUGETLB | VM_RESERVED;
vma->vm_ops = &hugetlb_vm_ops;
+ if (vma->vm_pgoff & ~(HPAGE_MASK >> PAGE_SHIFT))
+ return -EINVAL;
+
vma_len = (loff_t)(vma->vm_end - vma->vm_start);
mutex_lock(&inode->i_mutex);
return -ENOMEM;
if (flags & MAP_FIXED) {
- if (prepare_hugepage_range(addr, len, pgoff))
+ if (prepare_hugepage_range(addr, len))
return -EINVAL;
return addr;
}