Re: Dcache oops

[Oleg Drokin]

On Jun 3, 2016, at 6:36 PM, Linus Torvalds wrote:

> On Fri, Jun 3, 2016 at 3:23 PM, Al Viro <viro@xxxxxxxxxxxxxxxxxx> wrote:
>> On Fri, Jun 03, 2016 at 03:00:02PM -0700, Linus Torvalds wrote:
>>>> 
>>> Normally it's done at terminate_walk() time. But I note that in
>>> walk_component(), we do put_link(nd) which does a do_delayed_call(),
>>> but does *not* do a clear_delayed_call(), so now I think a subsequent
>>> terminate_walk() might drop it *again*.
>> 
>> Nope - put_link() also decrements nd->depth.  No double calls there...
> 
> Yeah, I figured that out, and then continued to try to look at other cases..
> 
> Happy to hear that you seem to have figured it out.
> 
> But why did it apparently only start happening now?

Apparently nobody runs NFS in a serious manner these days anymore.
EOPENSTALE is only used by NFS.