Hi
    We observed that LTP test cases are failing when run on some of the distros

Problem Statement:

    I observed that test cases mbind01.c and get_mempolicy01.c are failing during call to get_mempolicy() with error -EINVAL.
    In the kernel code the error comes from
----------------------------------------------------------------

SYSCALL_DEFINE5(get_mempolicy, int __user *, policy,
                unsigned long __user *, nmask, unsigned long, maxnode,
                unsigned long, addr, unsigned long, flags)
{
        int err;
        int uninitialized_var(pval);
        nodemask_t nodes;

        if (nmask != NULL && maxnode < MAX_NUMNODES)
                return -EINVAL;
                                                 <== in the kernel code,
MAX_NUMNODES comes to 512

----------------------------------------------------------------
Analysis:
    
    When kernel config option 'configure maximum number of SMP processors and NUMA node'  is set MAX_NUMNODES will be initialized to 512 and any call to get_mempolicy() with maxnode value  less than that cause the test to fail.
----------------------------------------------------------------
Fix:
    increase the default maxnode value in the test case to reflect this value. maxnode value comes from numaif.h and this patch increase the value to 512 from earlier 128.

Note:
    I will submit it in the format, once the patch is accepted

Thanks
Yeehaw

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