Re: [PATCH 14/22] hostfs: drop vmtruncate

[Christoph Hellwig]

> +++ b/fs/hostfs/hostfs_kern.c
> @@ -848,9 +848,11 @@ int hostfs_setattr(struct dentry *dentry, struct iattr *attr)
>  	    attr->ia_size != i_size_read(inode)) {
>  		int error;
>  
> -		error = vmtruncate(inode, attr->ia_size);
> -		if (err)
> -			return err;
> +		error = inode_newsize_ok(inode, attr->ia_size);
> +		if (error)
> +			return error;
> +
> +		truncate_setsize(inode, attr->ia_size);

The inode_change_ok call here is superflous, it's already done by
inode_change_ok at the beginning of the function.  Even if that wasn't
done doing it aftet set_attr() would be too late anyway.

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