From: Alex Elder <elder@inktank.com>
Date: Sat, 27 Apr 2013 14:59:30 +0000 (-0500)
Subject: rbd: move more initialization into rbd_dev_image_probe()
X-Git-Tag: omap-for-v3.10/dt-fixes-for-merge-window~26^2~33
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9bb81c9be90c1ad265547f0a40f543548d263fb4;p=pandora-kernel.git

rbd: move more initialization into rbd_dev_image_probe()

Move a block of initialization related to the "ceph-side" of an rbd
image out of rbd_dev_probe_finish() and into rbd_dev_image_probe().

Add appropriate error handling to clean things up in the event any
of these new functions return an error.

We know that rbd_dev_snaps_update(), rbd_dev_spec_update(), and
rbd_dev_probe_parent() all clean up after themselves before they
return an error, so no special cleanup is required except when an
earlier call succeeds.  Since rbd_dev_spec_update() only updates the
spec field (whose cleanup will be handled by dropping the last
reference to the spec) there is no cleanup action associatied with
that.

Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
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