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[Xen-devel] [PATCH 1/4] xen/balloon: Use PageHighMem() for high memory p

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

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