[linux-cifs-client] CIFS mount breaks when LinuxExtensionsEnabled == 0

[Adam Nielsen]

Hi all,

I'm just setting up a new machine with a new kernel version (2.6.26) and 
I just discovered that I can no longer disable the UNIX/POSIX extensions 
properly.

If I mount a CIFS share normally all is fine, except nobody can access 
the files because of the permissions.  But if I then "echo 0 > 
/proc/fs/cifs/LinuxExtensionsEnabled" and remount the share to fix this, 
it comes up empty, with "ls" reporting zero files.  If I enable the 
extensions again and remount then all the files reappear.

I never had any troubles with this on the old machine, so something 
must've changed between its ancient kernel version and 2.6.26.

Are other people able to successfully mount CIFS shares with the 
extensions disabled and this kernel version?  Any other ideas what might 
be causing this?

Many thanks,
Adam.