Hello Andrew,

This is a kernel module patch which I developed to test my patches.

The module makes a kind of memory pressure situation. After that, the
module tests if the OVERCOMMIT_GUESS detects overcommit.

The module has "mode" option. If you specify "mode=1", the module
tries to allocate pages in the test phase.

Here is the test result when I did "mode=1" test on my machine.

* 2.6.17-rc1-mm1

   kernel: Test MAY be <failed>.
   kernel: allocation failed: out of vmalloc space - use vmalloc=<size> to increase size.
   kernel: allocation failed: out of vmalloc space - use vmalloc=<size> to increase size.
   kernel: Test SURELY was <FAILED>.


* 2.6.17-rc1-mm1 + my patches

   kernel: Test was <PASSED>.


Unfortunately, this kernel module needs another kernel patch.
I will send it in later e-mail.

Please note that I don't intend to propose to apply the module to
kernel tree.

Best regards,
Hideo Aoki

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Hideo Aoki, Hitachi Computer Products (America) Inc.