On Thu, 13 Jul 2006 11:35:28 -0700
"Tim Pepper" <[email protected]> wrote:
> On 5/3/06, Andrew Morton <[email protected]> wrote:
> > On Wed, 3 May 2006 04:08:49 +0100
> > Al Viro <[email protected]> wrote:
> >
> > > No. It's way past time to bump it to 8. Everyone had been warned - for
> > > months now.
> > >
> > > Signed-off-by: Al Viro <[email protected]>
> > > ----
> > > --- a/include/linux/namei.h 2006-03-31 20:08:42.000000000 -0500
> > > +++ b/include/linux/namei.h 2006-05-02 23:06:46.000000000 -0400
> > > @@ -11,7 +11,7 @@
> > > struct file *file;
> > > };
> > >
> > > -enum { MAX_NESTED_LINKS = 5 };
> > > +enum { MAX_NESTED_LINKS = 8 };
> > >
> > > struct nameidata {
> > > struct dentry *dentry;
> >
> > It's a non-back-compatible change which means that people will install
> > 2.6.18+, will set stuff up which uses more that five nested links and some
> > will discover that they can no longer run their software on older kernels.
> >
> > It'll only hurt a very small number of people, but for those people, it
> > will hurt a lot. And I can't really think of anything we can do to help
> > them, apart from making the new behaviour runtime-controllable, defaulting
> > to "off", but add a once-off printk when we hit MAX_NESTED_LINKS, pointing
> > them at a document which tells them how to turn on the new behaviour and
> > which explains the problems. Which sucks.
> >
> > But I guess as major distros are 2.6.16-based, this is a good time to make
> > this change.
>
> Doesn't look like this ended up in 2.6.18-rc nor -mm. The email
> thread in May was tending towards finally bumping it. Major distros
> already have it at 8 for a long time. Is there any reason left (aside
> now from possibly waiting until 2.6.19's window?) to wait?
hm, thanks, it fell through a crack. I queued it.
Given that distros are already shipping this, I guess we should do this
asap (ie: 2.6.18), to keep the various Linuxes out there in sync.
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