Re: [2.4] VFS locking problem during concurrent link/unlink

[Oleg Drokin]

Hello!

On Thu, Jan 16, 2003 at 10:39:41AM -0500, Chris Mason wrote:
> >    Debugging reiserfs problem that can be demonstrated with script created by
> >    Zygo Blaxell, I started to wonder if the problem presented is indeed reiserfs
> >    fault and not VFS.
> >    Though the Zygo claims script only produces problems on reiserfs, I am trying
> >    it now myself on ext2 (which will take some time).
> > 
> >    Debugging shows that reiserfs_link is sometimes called for inodes whose
> >    i_nlink is zero (and all corresponding data is deleted already).
> >    So my current guess of what's going on is this:
> No, this is a reiserfs bug, since we schedule after doing link checks in
> reiserfs_link and reiserfs_unlink.  I sent a patch to reiserfs dev a
> while ago, I'll pull it out of the suse kernel and rediff against
> 2.4.20.

Yes we do.
But on the other hand I've put a check at the beginning of reiserfs_link
and I am still seeing these links on inodes with i_nlink == 0.

Bye,
    Oleg