Re: [PATCH 6/8] nfs: don't use ->d_time

[Al Viro]

On Wed, Jun 22, 2016 at 04:35:08PM +0200, Miklos Szeredi wrote:
>  static void nfs_d_release(struct dentry *dentry)
>  {
>  	/* free cached devname value, if it survived that far */
> -	if (unlikely(dentry->d_fsdata)) {
> +	if (unlikely(NFS_D(dentry)->devname)) {
>  		if (dentry->d_flags & DCACHE_NFSFS_RENAMED)
>  			WARN_ON(1);
>  		else
> -			kfree(dentry->d_fsdata);
> +			kfree(NFS_D(dentry)->devname);
>  	}
> +	kfree(dentry->d_fsdata);

Again, is that safe wrt RCU delays?