nfsd_readlink(): switch to vfs_get_link()

__be32

nfsd_readlink(struct svc_rqst *rqstp, struct svc_fh *fhp, char *buf, int *lenp)

{

	mm_segment_t	oldfs;

	__be32		err;

	int		host_err;

	const char *link;

	struct path path;

	DEFINE_DELAYED_CALL(done);

	int len;

	err = fh_verify(rqstp, fhp, S_IFLNK, NFSD_MAY_NOP);

	if (err)

		goto out;

	if (unlikely(err))

		return err;

	path.mnt = fhp->fh_export->ex_path.mnt;

	path.dentry = fhp->fh_dentry;

	err = nfserr_inval;

	if (!d_is_symlink(path.dentry))

		goto out;

	if (unlikely(!d_is_symlink(path.dentry)))

		return nfserr_inval;

	touch_atime(&path);

	/* N.B. Why does this call need a get_fs()??

	 * Remove the set_fs and watch the fireworks:-) --okir

	 */

	oldfs = get_fs(); set_fs(KERNEL_DS);

	host_err = vfs_readlink(path.dentry, (char __user *)buf, *lenp);

	set_fs(oldfs);

	if (host_err < 0)

		goto out_nfserr;

	*lenp = host_err;

	err = 0;

out:

	return err;

	link = vfs_get_link(path.dentry, &done);

	if (IS_ERR(link))

		return nfserrno(PTR_ERR(link));

out_nfserr:

	err = nfserrno(host_err);

	goto out;

	len = strlen(link);

	if (len < *lenp)

		*lenp = len;

	memcpy(buf, link, *lenp);

	do_delayed_call(&done);

	return 0;

}

/*