tree 3fb3b050ef993092db69463fa56507f03eb31cf8
parent 84e4075d60fc8f1c0b937765620bc784dd0c3d39
author Daniel De Graaf <dgdegra@tycho.nsa.gov> 1297282320 -0500
committer Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> 1297710981 -0500

xen-gntdev: Avoid unmapping ranges twice

In paravirtualized domains, mn_invl_page or mn_invl_range_start can
unmap a segment of a mapped region without unmapping all pages. When
the region is later released, the pages will be unmapped twice, leading
to an incorrect -EINVAL return.

Signed-off-by: Daniel De Graaf <dgdegra@tycho.nsa.gov>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>