From: Ilya Dryomov <ilya.dryomov@inktank.com>
Date: Tue, 22 Jul 2014 17:53:07 +0000 (+0400)
Subject: rbd: show the entire chain of parent images
X-Git-Tag: omap-for-v3.17/fixes-against-rc2~85^2~15
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ff96128fb020e26e7b32e12e887013956d840f08;p=pandora-kernel.git

rbd: show the entire chain of parent images

Make /sys/bus/rbd/devices/<id>/parent show the entire chain of parent
images.  While at it, kernel sprintf() doesn't return negative values,
casting to unsigned long long is no longer necessary and there is no
good reason to split into multiple sprintf() calls.

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