Re: [PATCH 06/20] sysfs: Use dentry_ops instead of directly playingwith the dcache

From: Tejun Heo
Date: Thu May 21 2009 - 03:41:22 EST


Eric W. Biederman wrote:
>> Ummm... what happens if sysfs recreates those identical nodes again
>> while the old dentries are lingering? The dead ones will linger till
>> the submounts are gone and then look ups after that will show the new
>> ones, right?
>
> Yep. On the vfs level. The sysfs dirent tree will reflect what is
> going on with the hardware.
>
> This is a vfs misfeature, that I hope someday we will get fixed.
> But for now it is better not to leak mount points. Especially
> since no one actually mounts things on sysfs.

fuse and debugfs do. :-P

Acked-by: Tejun Heo <tj@xxxxxxxxxx>

--
tejun
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/