tree 663d324d4a3635558ac8efd2c113d70330cfcc81
parent 95533d5ffbdf3f45e8daa64477b63cf771376618
author Anthony Liguori <aliguori@us.ibm.com> 1245692340 -0500
committer Anthony Liguori <aliguori@us.ibm.com> 1245852555 -0500

Make sure to zero out memory before calling madvise to increase robustness

Avi pointed out that it's not entirely safe to rely on madvise zeroing out
memory.  So let's do it explicitly before calling madvise.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>