On Fri, Dec 11, 2020 at 7:57 AM Jens Axboe <axboe@xxxxxxxxx> wrote:
>
> On 12/10/20 7:35 PM, Al Viro wrote:
> > _IF_ for some theoretical exercise you want to do "lookup without dropping
> > out of RCU", just add a flag that has unlazy_walk() fail. With -ECHILD.
> > Strip it away in complete_walk() and have path_init() with that flag
> > and without LOOKUP_RCU fail with -EAGAIN. All there is to it.
>
> Thanks Al, that makes for an easier implementation. I like that suggestion,
> boils it down to just three hunks (see below).
Ooh. Yes, very nice.
Linus
