ompi/oshmem: fix cswap bug in mca/atomic/mxm. #4996
Merged
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In a CSWAP(prev, cond, value) operation, 'prev' returns the previous value on target side, 'cond' is condition value, and 'value' contains value to be swapped to the target. CSWAP operation should not change 'value'. Originally mca/atomic/mxm changes content of 'value' buffer with 'prev' value, which is not correct. This PR fixes this issue.
Signed-off-by: Xin Zhao xinz@mellanox.com