From: Alex Elder <elder@inktank.com>
Date: Tue, 30 Apr 2013 05:44:33 +0000 (-0500)
Subject: rbd: look up snapshot name in names buffer
X-Git-Tag: omap-for-v3.10/dt-fixes-for-merge-window~26^2~13
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9682fc6d3a8b63f58fbfc5084f32c038170cfd6b;p=pandora-kernel.git

rbd: look up snapshot name in names buffer

Rather than scanning the list of snapshot structures for it, scan
the snapshot context buffer containing snapshot names in order to
determine for a format 1 image the name associated with a given
snapshot id.

Pull out the part of rbd_dev_v1_snap_info() that does this scan into
a new function, _rbd_dev_v1_snap_name().  Have that function return
a dynamically-allocated copy of the name, and don't duplicate it in
rbd_dev_v1_snap_info().

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