linux-kernel - Re: Bug in current -git tree causing dbus and gnome to chew up cpu time

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Message-Id: <200702131430.47053.agruen@suse.de>
Date:	Tue, 13 Feb 2007 14:30:46 -0800
From:	Andreas Gruenbacher <agruen@...e.de>
To:	Greg KH <greg@...ah.com>
Cc:	torvalds@...ux-foundation.org, neilb@...e.de,
	viro@...iv.linux.org.uk, hch@....de, akpm@...ux-foundation.org,
	linux-kernel@...r.kernel.org
Subject: Re: Bug in current -git tree causing dbus and gnome to chew up cpu time

On Tuesday 13 February 2007 13:37, Greg KH wrote:
> On Tue, Feb 13, 2007 at 11:58:02AM -0800, Andreas Gruenbacher wrote:
> > > I'm running pretty new GNOME and dbus here:
> > > 	dbus 1.0.2
> > > 	gnome 2.16.2
> > > 	hal 0.5.7.1
> > > 	nautilus 2.16.3
> > >
> > > Any ideas of things I can test?
> >
> > Sorry for the breakage. Printk of the __d_path result may tell:
> >
> > Index: b/fs/dcache.c
> > ===================================================================
> > --- a/fs/dcache.c
> > +++ b/fs/dcache.c
> > @@ -1803,6 +1803,8 @@ char *__d_path(struct dentry *dentry, st
> >
> >  out:
> >         spin_unlock(&dcache_lock);
> > +	printk(KERN_DEBUG "%s(%d): %s\n", current->comm, current->pid,
> > +	       IS_ERR(buffer) ? "failed" : buffer);
> > 	return buffer;
>
> This causes the following to just loop over and over, incrementing the
> pid:
>
> gnome-vfs-daemo(8914):

That's the weird case, and it should only trigger if there's no path to be 
recovered from what gnome-vfs-deamon calls d_path on, like a lazily unmounted 
filesystem. (A bind mount wouldn't do.)

> I'm running gnome-vfs version 2.6.13 if that matters.
>
> Anything else I can try?

I guess I'll just have to check what gnome-vfs-deamon does, thanks.

Andreas
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