Huge pages backed shared memory segment fails to allocate if its size is not a multiple of huge page size
Issue
shmget() and shmat() used with SHM_HUGETLB flag (i.e. allocating huge pages for this memory segment) fail to allocate shared memory if the size requested is not in the range [ N*HUGE_PAGE_SIZE - 4095, N*HUGE_PAGE_SIZE ] (where N is a natural number).
Environment
Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 5
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