/*
* Must commit qparity update to memory before waiting for other parity
* quiescent state. Failure to do so could result in the writer waiting
* forever while new readers are always accessing data (no progress).
/*
* Must commit qparity update to memory before waiting for other parity
* quiescent state. Failure to do so could result in the writer waiting
* forever while new readers are always accessing data (no progress).