If the requested range has a hole, the calculation of the number of
pages to unmap is off by one. Fix it.
Signed-off-by: Ross Lagerwall <ross.lagerw...@citrix.com>
---
drivers/xen/gntdev.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/drivers/xen/gntdev.c b/drivers/xen/gntdev.c
index 57efbd3..d3391a1 100644
--- a/drivers/xen/gntdev.c
+++ b/drivers/xen/gntdev.c
@@ -380,10 +380,8 @@ static int unmap_grant_pages(struct grant_map *map, int
offset, int pages)
}
range = 0;
while (range < pages) {
- if (map->unmap_ops[offset+range].handle == -1) {
- range--;
+ if (map->unmap_ops[offset+range].handle == -1)
break;
- }
range++;
}
err = __unmap_grant_pages(map, offset, range);
--
2.9.5
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