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SubjectRe: Analyzed/Solved: Booting 2.6.30-rc2-git7 very slow
On Wed, Apr 29, 2009 at 01:17:55AM -0700, Andrew Morton wrote:

> > > > Questions remains: was this intentional? It breaks existing userspace and should therefore be considered a regression - right? On the other hand, it will never be a problem for RHEL-4/5 kernels, unless the change in 2.6.29 gets backported. Any ideas?
> > >
> > > afaik that was unintentional and was probably a mistake.
> > >
> > > I wonder how we did that.
> >
> > <paste>
> > > [hotplug]# grep sysfs /proc/mounts
> > > none /sys sysfs rw,relatime 0 0
> > > /sys /sys sysfs rw,relatime 0 0
> >
> > ___(I wonder how the heck that is accomplished)
>
> Beats me. I'm not seeing likely changes in fs/proc/base.c or around
> show_mountinfo(). Maybe sysfs broke in an ingenious way. (hopefully
> cc's viro).

Er... Somebody mounting sysfs twice? From some init script and from
/etc/fstab, perhaps? That definitely looks like two mount(2) had to
have been done to cause that...


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