Re: [PATCHv2 1/5] VFS: DazukoFS, stackable-fs, file access control

[Al Viro]

On Thu, Feb 12, 2009 at 04:27:14PM +0100, Jan Engelhardt wrote:

> This ought to be done better in light of the problem that one
> could issue `mount -t dazukofs /mnt /opt`
> In kernel code, I'm thinking something like
> 
> static int foofs_dothis(...)
> {
> 	buf = call d_path on sb->s_root

Call what on what?  There is no such thing as the mountpoint of superblock.
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