axmap: ensure we lock down the maps for shared access
authorJens Axboe <axboe@fb.com>
Fri, 19 Dec 2014 15:15:55 +0000 (08:15 -0700)
committerJens Axboe <axboe@fb.com>
Fri, 19 Dec 2014 15:15:55 +0000 (08:15 -0700)
Signed-off-by: Jens Axboe <axboe@fb.com>

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