rbd: update mapping size only on refresh
authorIlya Dryomov <ilya.dryomov@inktank.com>
Wed, 23 Jul 2014 13:11:21 +0000 (17:11 +0400)
committerIlya Dryomov <ilya.dryomov@inktank.com>
Fri, 25 Jul 2014 09:15:58 +0000 (13:15 +0400)
There is no sense in trying to update the mapping size before it's even
been set.

Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com>
Reviewed-by: Alex Elder <elder@linaro.org>
drivers/block/rbd.c

Simple merge