[PATCH 4.14 101/115] xen/gntdev: Fix partial gntdev_mmap() cleanup

4.14-stable review patch. If anyone has any objections, please let me know. -- From: Ross Lagerwall [ Upstream commit cf2acf66ad43abb39735568f55e1f85f9844e990 ] When cleaning up after a partially successful gntdev_mmap(), unmap the successfully

[PATCH 4.14 101/115] xen/gntdev: Fix partial gntdev_mmap() cleanup

4.14-stable review patch. If anyone has any objections, please let me know. -- From: Ross Lagerwall [ Upstream commit cf2acf66ad43abb39735568f55e1f85f9844e990 ] When cleaning up after a partially successful gntdev_mmap(), unmap the successfully mapped grant pages otherwise