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SubjectRe: [PATCH 2.6.24-rc3] Fix /proc/net breakage
Hi,

On Thu, Dec 27, 2007 at 09:41:45PM +0300, Alexey Dobriyan wrote:
> On Thu, Dec 27, 2007 at 06:40:56PM +0100, Andreas Mohr wrote:
> > On Fri, Dec 07, 2007 at 02:23:42AM -0800, Andrew Morton wrote:
> > > > (commit 2b1e300a9dfc3196ccddf6f1d74b91b7af55e416)
> > > >
> > > > This seems to have broken the use of /proc/bus/usb as a mountpoint. It
> > > > always appears empty now, whatever's supposed to be mounted there.
> > > >
> > >
> > > Yes. Denis and Eric are tossing around competing patches but afaik nobody
> > > is happy with any of them. Guys, could we get this sorted soonish please?
> >
> > "Soonish" being rather earlier than 20071227?
> > 'cause it's still throwing a fit for me on 2.6.24-rc6-mm1(!) (plus hotfix),
> > nothing visible in /proc/bus/usb, thus WLAN driver won't probe
> > anything.
>
> Patch which restores usual behaviour was merged in 2.6.24-rc5
> (3790ee4bd86396558eedd86faac1052cb782e4e1 "proc: remove/Fix proc generic d_revalidate")

Via a kerneltrap.org article (problematic internet setup here currently,
non-C&P text terminal only) I could see that this is the patch which
removes the d_revalidate member and the corresponding proc_revalidate_dentry().
And this is the state that my 2.6.24-rc_six_-mm1 tree is in already.
So either it didn't help here or it broke again by some later change or
there's some dumb PEBKAC error here.

> so no hotfixes are needed. I just checked with bind mounting / to
> /proc/bus/usb -- it works.

OK, I'll try to re-check manual, raw, bare-metal mounting (bind etc.) soonish.

"CONFIG_NETNS" as mentioned in the patch description actually seems
to be "CONFIG_NET_NS", BTW.
(which I DON'T have set at the moment, if this happens to make a difference)

Thanks,

Andreas Mohr


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