Re: [RFC][PATCH v4 12/69] teach handle_mounts() to handle RCU mode

Al Viro
2020-03-14T01:00:56Z

On Fri, Mar 13, 2020 at 05:28:12PM -0700, Linus Torvalds wrote:
> Oh, and here you accidentally fix the problem I pointed out about
> patch 11, as you move the code:
>
> On Fri, Mar 13, 2020 at 4:54 PM Al Viro <viro@zeniv.linux.org.uk> wrote:
> >
> > + if (unlikely(!*inode))
> > + return -ENOENT;
>
> Correct test added.
>
> > - if (unlikely(!inode))
> > - return -ENOENT;
>
> Incorrect test removed.
>
> And again, maybe I'm misreading the patch. But it does look like it's
> wrong in the middle of the series, which would make bisection if
> there's some related bug "interesting".

Bisect hazard on botched reordering, actually. Fixed (IOW, that should've
been if (!*inode) already in #11).