This is recursive --bind. Patch is attached. While at it, rename MS_RECURSIVE to MS_REC -- this is its official definition as used in linux kernel and strace and other tools. See also http://bugs.debian.org/450895 Thanks!
Created attachment 3145 [details] patch for the issue
Fixed in git, will be in 1.19.x: commit 19311bfa7b8e8c6effa9c375de9b0eb4338bee12 Author: Roman Borisov <ext-roman.borisov@nokia.com> Date: Thu Mar 24 15:08:43 2011 +0300 mount: add --rbind option support Signed-off-by: Roman Borisov <ext-roman.borisov@nokia.com>