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

From: Oleg Drokin (
Date: Thu Jan 16 2003 - 10:43:52 EST


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.

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