linux-kernel - Re: request for patches: showing mount options

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Message-Id: <E1IEW21-0001kL-00@dorka.pomaz.szeredi.hu>
Date:	Fri, 27 Jul 2007 22:03:25 +0200
From:	Miklos Szeredi <miklos@...redi.hu>
To:	chuck.lever@...cle.com
CC:	miklos@...redi.hu, linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
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Subject: Re: request for patches: showing mount options

> Some mount options are never passed to the kernel, and thus can't appear 
> in /proc/mounts.  Examples include user, users, and _netdev for NFS.

These options control *who* may mount and *when* to mount.  They are
not a property of the mount itself and are not added to /etc/mtab.

There's a "user=ID" option that is added to /etc/mtab in case of user
mounts.  This identifies the owner of the mount, so that it can be
unmounted by that user.  There are patches in -mm that enable the
kernel to store this info.

Do you have other examples in mind?

Miklos

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