tree d15e7f32c6081cd81cbbc6cb7a321dad9fb6733f
parent f9783ec862ea8ce0071f34a7fd028229d9fd98b4
author Carsten Otte <cotte@de.ibm.com> 1317048034 +0200
committer Martin Schwidefsky <schwidefsky@de.ibm.com> 1317048050 +0200

[S390] gmap: always up mmap_sem properly

If gmap_unmap_segment figures that the segment was not mapped in the
first place, it need to up mmap_sem on exit.

Cc: <stable@kernel.org>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>