[PATCH] avoid memory allocations in xfs_fs_vcmn_err

[Eric Sandeen]

Christoph Hellwig wrote:

> +	if (mp) {
> +		len = sprintf(message, "Filesystem \"%s\": ", mp->m_fsname);
> +
> +		/*
> +		 * Skip the printk if we can't print anything useful
> +		 * due to an over-long device name.
> +		 */
> +		if (len >= sizeof(message))
> +			goto out;


Do we really want to drop the whole message if the fs name can't fit?
Maybe drop the fsname altogether and print the error anyway?  Being
completely silent doesn't sound great...

-Eric