[PATCH 1/4] xen/balloon: Use PageHighMem() for high memory page detection

[Daniel Kiper]

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

Signed-off-by: Daniel Kiper <dkiper@xxxxxxxxxxxx>
---
 drivers/xen/balloon.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/xen/balloon.c b/drivers/xen/balloon.c
index 043af8a..61665b2 100644
--- a/drivers/xen/balloon.c
+++ b/drivers/xen/balloon.c
@@ -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),
-- 
1.5.6.5
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/