DIO defect with ppc64.

[Rui Ding]

Hi,ALL
 
        Some defect with DIO. 
 
        Recently I did a DIO test based on ppc64 paltform.
        The system memory and swap space was eat up gradually .At last the 
system crashed down because out of memory .
 
        If we terminated this test case before the systetm down,mem and 
swap will never come back to normal eventhough
            many hours have past. Looks like kernel never free the memory 
and swap space that DIO operation had ever occupied.
 

        ////////////////////////////////
        //  Test Environment
        ////////////////////////////////

          2.6.9-22.EL,ppc64, i*86, powerpc

        ////////////////////////////////
        //  Test        Case
        ////////////////////////////////

        fsx-linux 
        fsx-linux is a test suit provided by LTP. 
http://ltp.sourceforge.net/
 
 
        Seems that the kernel nerver return the DIO buffuers .Did someone 
meet this problem? Or Is there  some patch 
             available for this bug?
 
 

Regards 
Ding Rui(Rickey)
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