From: Alex Elder <elder@inktank.com>
Date: Wed, 10 Apr 2013 17:34:25 +0000 (-0500)
Subject: rbd: record aggregate image transfer count
X-Git-Tag: omap-for-v3.10/dt-fixes-for-merge-window~26^2~106
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=55f27e09312310d4dea9bb7b80c696f407caf1be;p=pandora-kernel.git

rbd: record aggregate image transfer count

Compute the total number of bytes transferred for an image
request--the sum across each of the request's object requests.
To avoid contention do it only when all object requests are
complete, in rbd_img_request_complete().

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