Commits on Sep 20, 2017

1. Automatically set may_detach_mounts=1 on startup …

   This is kernel config available in RHEL7.4 based kernels that enables
   mountpoint removal where the mountpoint exists in other namespaces.
   In particular this is important for making this pattern work:
   
   ```
   umount -l /some/path
   rm -r /some/path
   ```
   
   Where `/some/path` exists in another mount namespace.
   Setting this value will prevent `device or resource busy` errors when
   attempting to the removal of `/some/path` in the example.
   
   This setting is the default, and non-configurable, on upstream kernels
   since 3.15.
   
   Signed-off-by: Brian Goff <cpuguy83@gmail.com>

   

   cpuguy83 committed Sep 20, 2017
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