From: William Lee Irwin III And this one fixes an overflow when there is more than 4GB of hugetlb. arch/i386/mm/hugetlbpage.c | 4 +--- 1 files changed, 1 insertion(+), 3 deletions(-) diff -puN arch/i386/mm/hugetlbpage.c~hugetlb-overflow-fix arch/i386/mm/hugetlbpage.c --- 25/arch/i386/mm/hugetlbpage.c~hugetlb-overflow-fix 2003-04-17 19:31:03.000000000 -0700 +++ 25-akpm/arch/i386/mm/hugetlbpage.c 2003-04-17 19:31:03.000000000 -0700 @@ -482,9 +482,7 @@ int hugetlb_report_meminfo(char *buf) int is_hugepage_mem_enough(size_t size) { - if (size > (htlbpagemem << HPAGE_SHIFT)) - return 0; - return 1; + return (size + ~HPAGE_MASK)/HPAGE_SIZE <= htlbpagemem; } /* _