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xen/grant-table: add helpers for allocating pages

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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>
This commit is contained in:
David Vrabel
2015-01-08 18:06:01 +00:00
parent 0ae65f49af
commit ff4b156f16
6 changed files with 44 additions and 13 deletions
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7
drivers/net/xen-netback/interface.c
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@@ -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)