Re: [PATCH 2/5] fs,nfs: lift compat nfs4 mount data handling into the nfs code

[Al Viro]

On Thu, Sep 17, 2020 at 10:22:33AM +0200, Christoph Hellwig wrote:
> There is no reason the generic fs code should bother with NFS specific
> binary mount data - lift the conversion into nfs4_parse_monolithic
> instead.

Considering the size of struct compat_nfs4_mount_data_v1...  Do we really
need to bother with that "copy in place, so we go through the fields
backwards" logics?  Just make that

> +static void nfs4_compat_mount_data_conv(struct nfs4_mount_data *data)
> +{
	struct compat_nfs4_mount_data_v1 compat;
	compat = *(struct compat_nfs4_mount_data_v1 *)data;
and copy the damnt thing without worrying about the field order...