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In base kernel 2.6.9-rc4, function hugetlb_get_unmapped_area failed to
find an unmapped area while unmapped area is huge. That's because
hugetlb_get_unmapped_area just searches forward from
mm->free_area_cache. If reaching TASK_SIZE, it does not go back to
TASK_UNMAPPED_BASE, just returns -ENOMEM.
The attachment is a simple case to trigger it on IA32 machine.

The other attachment is the patch to fix it.
1) Add a specific hugetlb_get_unmapped_area on i386.
2) Generic hugetlb_get_unmapped_area is also fixed.

Signed-off-by: Zhang Yanmin <yanmin.zhang@intel.com>

<<case.tar>> <<hugetlb_unmapped_area_2.6.9_rc4_i386.patch.diff>>
[unhandled content-type:application/x-tar][unhandled content-type:application/octet-stream]
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