Re: metadata plugins (was Re: the " 'official' point of view" expressed by kernelnewbies.org regarding reiser4 inclusion)

Hans Reiser
2006-07-30T05:58:33Z

Nikita Danilov wrote:

>Hans Reiser writes:
> > David Masover wrote:
> >
> > >
> > > If indeed it can be changed easily at all. I think the burden is on
> > > you to prove that you can change it to be more generic, rather than
> > > saying "Well, we could do it later, if people want us to..."
> >
> > None of the filesystems other than reiser4 have any interest in using
> > plugins, and this whole argument over how it should be in VFS is
> > nonsensical because nobody but us has any interest in using the
> > functionality. The burden is on the generic code authors to prove that
> > they will ever ever do anything at all besides complain. Frankly, I
> > don't think they will. I think they will never produce one line of code.
> >
> > Please cite one ext3 developer who is signed up to implement ext3 using
> > plugins if they are supported by VFS.
>
>In fact, they all do:
>
>struct inode_operations ext2_file_inode_operations;
>struct inode_operations ext2_dir_inode_operations;
>struct inode_operations ext2_special_inode_operations;
>struct inode_operations ext2_symlink_inode_operations;
>struct inode_operations ext2_fast_symlink_inode_operations;
>
>As you see, ext2 code already has multiple file "plugins", with
>persistent "plugin id" (stored in i_mode field of on-disk struct
>ext2_inode).
>
> >
> > Hans
> >
>
>Nikita.
>
>
>
>
>
So the job is already done. Good. Reiser4 can be included then.:)

Hans "The Easily Agreeable" Reiser