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xen/balloon: Use PageHighMem() for high memory page detection 

Replace pfn < max_low_pfn by !PageHighMem() in increase_reservation().
It makes more clearer what is going on.

Acked-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Daniel De Graaf <dgdegra@tycho.nsa.gov>
Signed-off-by: Daniel Kiper <dkiper@net-space.pl>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
This commit is contained in:
Daniel Kiper 2011-03-28 11:32:31 +02:00 committed by Konrad Rzeszutek Wilk
parent 0ce790e7d7
commit a7f3c8f1da
1 changed files with 1 additions and 1 deletions
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2
drivers/xen/balloon.c
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@ -246,7 +246,7 @@ static enum bp_state increase_reservation(unsigned long nr_pages)
set_phys_to_machine(pfn, frame_list[i]);
/* Link back into the page tables if not highmem. */
if (!xen_hvm_domain() && pfn < max_low_pfn) {
if (!xen_hvm_domain() && !PageHighMem(page)) {
int ret;
ret = HYPERVISOR_update_va_mapping(
(unsigned long)__va(pfn << PAGE_SHIFT),