xen: replace callers of alloc_vm_area()/free_vm_area() with xen_ prefixed one

Don't use alloc_vm_area()/free_vm_area() directly, instead define
xen_alloc_vm_area()/xen_free_vm_area() and use them.

alloc_vm_area()/free_vm_area() are used to allocate/free area which
are for grant table mapping. Xen/x86 grant table is based on virtual
address so that alloc_vm_area()/free_vm_area() are suitable.
On the other hand Xen/ia64 (and Xen/powerpc) grant table is based on
pseudo physical address (guest physical address) so that allocation
should be done differently.
The original version of xenified Linux/IA64 have its own
allocate_vm_area()/free_vm_area() definitions which don't allocate vm area
contradictory to those names.
Now vanilla Linux already has its definitions so that it's impossible
to have IA64 definitions of allocate_vm_area()/free_vm_area().
Instead introduce xen_allocate_vm_area()/xen_free_vm_area() and use them.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/xen/grant-table.c b/drivers/xen/grant-table.c
index d4a89b3d694f..3e02808c4055 100644
--- a/drivers/xen/grant-table.c
+++ b/drivers/xen/grant-table.c
@@ -482,7 +482,7 @@ static int gnttab_map(unsigned int start_idx, unsigned int end_idx)
 
 	if (shared == NULL) {
 		struct vm_struct *area;
-		area = alloc_vm_area(PAGE_SIZE * max_nr_grant_frames());
+		area = xen_alloc_vm_area(PAGE_SIZE * max_nr_grant_frames());
 		BUG_ON(area == NULL);
 		shared = area->addr;
 	}