From mboxrd@z Thu Jan  1 00:00:00 1970
From: Al Viro <viro@ftp.linux.org.uk>
Subject: Re: get vfsmount from dentry
Date: Sun, 12 Mar 2006 19:13:19 +0000
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Cc: Shaya Potter <spotter@cs.columbia.edu>,
	linux-fsdevel@vger.kernel.org
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To: Ashish Khurange <ashishk@it.iitb.ac.in>
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On Mon, Mar 13, 2006 at 12:24:54AM +0530, Ashish Khurange wrote:
> In few functions (like sys_fchmod) I have file struct as an argument, 
> which provides me both vfsmount and dentry, hence I can find out 
> pathname of the file being changed.
> Where as in few functions (like vfs_mkdir) I have only dentry and inode 
> of the directory, which are not sufficient to find the pathname.
> 
> I hope I am clear now.

mkdir /tmp/1
mkdir /tmp/2
mkdir /tmp/3
mount --bind /tmp/2 /tmp/1
mkdir /tmp/1/a
umount /tmp/1
mount --bind /tmp/3 /tmp/1
mkdir /tmp/1/a
umount /tmp/1

What output do you want to get from the last two mkdir() calls, assuming
you do have vfsmounts?  What is this output useful for?