hugetlb bug

[HuaFeijun <hua.feijun@gmail.com>]

Is it kernel bug? The code works normally on ia64 machine,howerver, on
EM64T,it fails tot work.
The function call of shmat will change /proc/meminfo;and  the shmdt
can't restore it to original content.  How to restore it to original
stauts?Thanks.

Is it kernel bug? The code works normally on ia64 machine,howerver, on EM64T,it fails tot work.
The function call of shmat will change /proc/meminfo file's content;and  the shmdt
can't restore the file's content.  How to restore it to original stauts?Thanks.
-------------------------------------------------------
=== before shmat ===
MemTotal:      2056388 kB
MemFree:        607300 kB
Buffers:         43976 kB
Cached:         134252 kB
SwapCached:          0 kB
Active:         151940 kB
Inactive:        63436 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2056388 kB
LowFree:        607300 kB
SwapTotal:     4096564 kB
SwapFree:      4096564 kB
Dirty:             176 kB
Writeback:           0 kB
Mapped:          50880 kB
Slab:            93236 kB
Committed_AS:    90340 kB
PageTables:       3528 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264436 kB
VmallocChunk: 536606243 kB
HugePages_Total:   500
HugePages_Free:    500
Hugepagesize:     2048 kB

=== after shmat ===
MemTotal:      2056388 kB
MemFree:        607300 kB
Buffers:         43976 kB
Cached:         134252 kB
SwapCached:          0 kB
Active:         151940 kB
Inactive:        63436 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2056388 kB
LowFree:        607300 kB
SwapTotal:     4096564 kB
SwapFree:      4096564 kB
Dirty:             176 kB
Writeback:           0 kB
Mapped:          50880 kB
Slab:            93236 kB
Committed_AS:    90340 kB
PageTables:       3528 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264436 kB
VmallocChunk: 536606243 kB
HugePages_Total:   500
HugePages_Free:    0
Hugepagesize:     2048 kB

=== after shmdt===
MemTotal:      2056388 kB
MemFree:        607300 kB
Buffers:         43976 kB
Cached:         134252 kB
SwapCached:          0 kB
Active:         151940 kB
Inactive:        63436 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2056388 kB
LowFree:        607300 kB
SwapTotal:     4096564 kB
SwapFree:      4096564 kB
Dirty:             176 kB
Writeback:           0 kB
Mapped:          50880 kB
Slab:            93236 kB
Committed_AS:    90340 kB
PageTables:       3528 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264436 kB
VmallocChunk: 536606243 kB
HugePages_Total:   500
HugePages_Free:    0
Hugepagesize:     2048 kB