Re: [PATCH 0/23] File descriptor hot-unplug support v2

Al Viro
2009-06-08T15:07:12Z

On Mon, Jun 08, 2009 at 11:41:19AM +0200, Miklos Szeredi wrote:
> On Sat, 6 Jun 2009, Al Viro wrote:
> > Frankly, I very much suspect that force-umount is another case like that;
> > we'll need a *lot* of interesting cooperation from fs for that to work and
> > to be useful. I'd be delighted to be proven incorrect on that one, so
> > if you have anything serious in that direction, please share the details.
>
> Umm, not sure why we'd need cooperation from the fs. Simply wait for
> the operation to exit the filesystem or driver. If it's a blocking
> operation, send a signal to interrupt it.

And making sure that operations *are* interruptible (and that we can cope
with $BIGNUM new failure exits correctly) does not qualify as cooperation?