[PATCH 0/2] rbd: set rbd device to readonly when we enable unsupported feature

[Dongsheng Yang <dongsheng.yang@xxxxxxxxxxxx>]

Please consider this case, when we rbd map an image with layering feature, and enable
exclusive-lock and object-map feature by rbd feature enable command. The any writing
via kernel rbd will make the object-map invalid.

So let's set the rbd device read-only when we detect unsupported feature enabled.

Dongsheng Yang (2):
  rbd: return the features to caller even if there is unsupported bits
  rbd: refresh features and set the disk to readonly if there is
    unsupported bit

 drivers/block/rbd.c | 41 ++++++++++++++++++++---------------------
 1 file changed, 20 insertions(+), 21 deletions(-)

-- 
1.8.3.1


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