Re: [Fwd: [PATCH 1/1] mount: shared-subtree support for mount]

[Janak Desai <janak@us.ibm.com>]

I am copying Ram Pai on this since he created the patch.

Russell Coker wrote:

>On Wednesday 10 May 2006 00:27, Janak Desai <janak@us.ibm.com> wrote:
>  
>
>>As per Russell's request, I am posting this patch here as well, so
>>broader selinux
>>community can also play with the shared tree feature.
>>    
>>
>
>Thanks for that.
>
>I just built mount with that patch and tried it out but it doesn't seem to 
>work.  I run the following command from root login:
>mount --make-private --bind /tmp/tmp.inst-user-user /tmp
>
>Then when I inspect /tmp from other sessions it seems that the change is 
>global.
>
>Does the rawhide kernel 2.6.16-1.2196_FC6 lack support for this or did I get 
>the command-line wrong?
>  
>
Shared subtree support went into main line from 2.6.15 so the rawhide 
kernel should
have support for this.

>Also from the documentation it seems that such a private mount does all we 
>need without any need to call unshare().  Is my understanding of this 
>correct?
>  
>
Yes, that's correct. Shared sub-tree feature does not need unshare() 
system call.

-Janak


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