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authorDaniel De Graaf <dgdegra@tycho.nsa.gov>2011-11-28 20:49:10 +0400
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2011-12-16 20:26:02 +0400
commit0105d2b4fbc24c2fb6ca9bae650784dd7ddf0b12 (patch)
tree9442598b5e9d959ccfd6661e3c727840692028dc /drivers/xen
parentc3b3f16d1bceb5ac5f21528f889810b4ac5a3596 (diff)
downloadlinux-0105d2b4fbc24c2fb6ca9bae650784dd7ddf0b12.tar.xz
xen/gntalloc: release grant references on page free
gnttab_end_foreign_access_ref does not return the grant reference it is passed to the free list; gnttab_free_grant_reference needs to be explicitly called. While gnttab_end_foreign_access provides a wrapper for this, it is unsuitable because it does not return errors. Reported-by: Anil Madhavapeddy <anil@recoil.org> Signed-off-by: Daniel De Graaf <dgdegra@tycho.nsa.gov> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'drivers/xen')
-rw-r--r--drivers/xen/gntalloc.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/xen/gntalloc.c b/drivers/xen/gntalloc.c
index c95181f43a6a..f330a4b8b685 100644
--- a/drivers/xen/gntalloc.c
+++ b/drivers/xen/gntalloc.c
@@ -191,6 +191,8 @@ static void __del_gref(struct gntalloc_gref *gref)
if (!gnttab_end_foreign_access_ref(gref->gref_id, 0))
return;
+
+ gnttab_free_grant_reference(gref->gref_id);
}
gref_size--;