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[S390] gmap: always up mmap_sem properly
authorCarsten Otte <cotte@de.ibm.com>
Mon, 26 Sep 2011 14:40:34 +0000 (16:40 +0200)
committerMartin Schwidefsky <schwidefsky@de.ibm.com>
Mon, 26 Sep 2011 14:40:50 +0000 (16:40 +0200)
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>

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