tree f70f7e3f33f63dcf77428b745f0dd01ecbee8e24
parent 6909ba14c25b4db6be2ff89f4fa0fac2d70151a0
author Bjorn Helgaas <bjorn.helgaas@hp.com> 1288129288 -0600
committer Jesse Barnes <jbarnes@virtuousgeek.org> 1288132408 -0700

resources: handle overflow when aligning start of available area

If tmp.start is near ~0, ALIGN(tmp.start) may overflow, which would
make us think there's more available space than there really is.  We
would likely return something that conflicts with a previous resource,
which would cause a failure when allocate_resource() requests the newly-
allocated region.

Reference: https://bugzilla.redhat.com/show_bug.cgi?id=646027
Reported-by: Fabrice Bellet <fabrice@bellet.info>
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>