Re: vfs-scale, d_revalidate from nfsd

[Al Viro]

> BTW, why on the earth do you have that:
> static int xattr_hide_revalidate(struct dentry *dentry, struct nameidata *nd)
> {
>         if (nd->flags & LOOKUP_RCU)
>                 return -ECHILD;
>         return -EPERM;
> }
> when the sole intent of that sucker is to have dentry of /.xattr (pinned
> in dcache and hashed all along) rejected on lookups from root?  IOW, WTF
> bother with -ECHILD here at all?

PS: that's fs/reiserfs/xattr.c
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