# Re: \[PATCH 1/2\] vfs: add flags parameter to -\>mmap() in 'struct file\_operations'

- From: Christoph Hellwig \<hidden\>
- Date: 2017-08-31 10:02:03 
- List: linux-api
- Page: https://ratatoskr.run/linux-api/2017/08/6485138
- Thread: https://ratatoskr.run/linux-mm/2017/08/6485134/t.md

```text
> -static int ecryptfs_mmap(struct file *file, struct vm_area_struct *vma)
> +static int ecryptfs_mmap(struct file *file, struct vm_area_struct *vma,
> +			 unsigned long map_flags)
>  {
>  	struct file *lower_file = ecryptfs_file_to_lower(file);
>  	/*
> @@ -179,7 +180,7 @@ static int ecryptfs_mmap(struct file *file, struct vm_area_struct *vma)
>  	 */
>  	if (!lower_file->f_op->mmap)
>  		return -ENODEV;
> -	return generic_file_mmap(file, vma);
> +	return generic_file_mmap(file, vma, 0);

Shouldn't ecryptfs pass on the flags?  Same for coda_file_mmap and
shm_mmap.

> -static inline int call_mmap(struct file *file, struct vm_area_struct *vma)
> +static inline int call_mmap(struct file *file, struct vm_area_struct *vma,
> +			    unsigned long flags)
>  {
> -	return file->f_op->mmap(file, vma);
> +	return file->f_op->mmap(file, vma, flags);
>  }

It would be great to kill this pointless wrapper while we're at it.
```