Hans Reiser wrote:
> I am just coming into the middle of this, so forgive me, but why are
> you implementing this above the filesystem layer? It seems like
> virtual files should be plugins that the filesystem calls while
> resolving its lookups and finding links to the plugin.
I am just coming into the middle of this, so forgive me, but why are you implementing
this above the
filesystem layer? It seems like virtual files should be plugins that the filesystem
calls while
resolving its lookups and finding links to the plugin. This means that something
should be
Hi,
Here's a new version of the virtual file patch (against 2.4.0-test5),
and the kernel module for avfs/podfuk.
It now does:
- Clean up automatic mounts when parent is umounted
- Clear dcache upon module insert, so virtual files are always found
- Correctly handle virtual fil
parts of the VFS
>which checks f_ops anyway.
I don't think that making a directory from a file is necessarily a
good idea:
- Some programs will probably break by this (i.e. will not let you cd
into a non-directory
- You cannot distinguish virtual and non-virtual files in
Miklos Szeredi wrote:
> Problems:
>
> - The filesystem will be littered with these loopback mounts. This
>should be cleared upon unmount, and possibly when the dcache is
>shrunk. There was a similar requirement for new autofs IIRC.
>
> - Creation/removal of
obal && !dentry->d_inode)
lookup_global(nd, dentry);
There are two cases:
1) The user doesn't want virtual files -- lookup_global is NULL: The
performance impact is two assembly instructions. That _is_
infinitesimal.
2) The user wants virtual files: The perform
Hi!
> It looks much cleaner than my previous approaches. There seems to be
> something strange with usage counts:
>
> pavel@bug:/tmp/cz1_mbrola.tgz#utar$ ls -al
> total 88
> drwxr-xr-x 2 pavelusers3586 Mar 26 18:43 ./
> drwxrwxrwt 38 root root81920 Jul 24 09:57 ../
>
On Mon, 24 Jul 2000, Pavel Machek wrote:
> Hi!
>
> > I've been looking at the possibility of cleanly implementing virtual
> > files (podfuk/avfs style) with the multiple mount thing in 2.4
> > kernels. Here is how it would work:
> >
> > 1) There need
Hi!
> I've been looking at the possibility of cleanly implementing virtual
> files (podfuk/avfs style) with the multiple mount thing in 2.4
> kernels. Here is how it would work:
>
> 1) There needs to be a global lookup hook in VFS. If a real lookup
> fails, the global
Hi!
I've been looking at the possibility of cleanly implementing virtual
files (podfuk/avfs style) with the multiple mount thing in 2.4
kernels. Here is how it would work:
1) There needs to be a global lookup hook in VFS. If a real lookup
fails, the global lookup is invoked. The cached l
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