xen/balloon: Use PageHighMem() for high memory page detection
authorDaniel Kiper <dkiper@net-space.pl>
Mon, 28 Mar 2011 09:32:31 +0000 (11:32 +0200)
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Wed, 30 Mar 2011 15:52:04 +0000 (11:52 -0400)
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>
drivers/xen/balloon.c

index 043af8ad6b601058418147f224b417c2eb74447d..61665b2601bf8acc071e4e15ff415c4e64055b12 100644 (file)
@@ -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),