xen/grant-table: add helpers for allocating pages

Add gnttab_alloc_pages() and gnttab_free_pages() to allocate/free pages
suitable to for granted maps.

Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Reviewed-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>

1 files changed, 3 insertions, 4 deletions

diff --git a/drivers/net/xen-netback/interface.c b/drivers/net/xen-netback/interface.c
index 9259a732e8a4..2e07f8433412 100644
--- a/drivers/net/xen-netback/interface.c
+++ b/drivers/net/xen-netback/interface.c
@@ -483,9 +483,8 @@ int xenvif_init_queue(struct xenvif_queue *queue)
          * better enable it. The long term solution would be to use just a
          * bunch of valid page descriptors, without dependency on ballooning
          */
-        err = alloc_xenballooned_pages(MAX_PENDING_REQS,
-                                       queue->mmap_pages,
-                                       false);
+        err = gnttab_alloc_pages(MAX_PENDING_REQS,
+                                 queue->mmap_pages);
         if (err) {
                 netdev_err(queue->vif->dev, "Could not reserve mmap_pages\n");
                 return -ENOMEM;
@@ -662,7 +661,7 @@ void xenvif_disconnect(struct xenvif *vif)
  */
 void xenvif_deinit_queue(struct xenvif_queue *queue)
 {
-        free_xenballooned_pages(MAX_PENDING_REQS, queue->mmap_pages);
+        gnttab_free_pages(MAX_PENDING_REQS, queue->mmap_pages);
 }
 
 void xenvif_free(struct xenvif *vif)