Re: [patch] btrfs: fix inode rbtree corruption

[Jens Axboe <jens.axboe@oracle.com>]

On Wed, Aug 19 2009, Nick Piggin wrote:
> On Wed, Aug 19, 2009 at 10:46:59AM +0200, Jens Axboe wrote:
> > On Wed, Aug 19 2009, Nick Piggin wrote:
> > > See my other reply. It *can* work with key aliases, but this particular
> > > code does not.
> > > 
> > > It is pretty easy obviously to put in duplicates because the rbtree
> > > code doesn't know about keys, but if we do this then it looks like
> > > it might cause the search code to miss some valid inodes and instead
> > > return freeing inodes -- so you'd also have to look at that and update
> > > it which is why I didn't go down this route..
> > 
> > Mine was just a generic statement, I didn't read the btrfs code (hence
> > my comment about potential lookup bug, if you allow aliases you have to
> > be careful).
> 
> Ah ok. Well yeah in this case btrfs is definitely wrong in the way it
> tried to insert aliases.

I looked at the actual problem now and I agree, it cannot work that way.
I don't know if Linus is planning another -rc, we should probably get
this upstream sooner rather than later. Chris is away this week, so if
we can get Yan to agree on this patch as well, I'll submit it.

-- 
Jens Axboe