From: Alex Elder <elder@inktank.com>
Date: Thu, 24 Jan 2013 22:13:36 +0000 (-0600)
Subject: rbd: record image-relative offset in object requests
X-Git-Tag: omap-for-v3.10/dt-fixes-for-merge-window~26^2~105
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7da22d296d871174f3e8251a02a8f86a90c7463b;p=pandora-kernel.git

rbd: record image-relative offset in object requests

For an image object request we will need to know what offset within
the rbd image the request covers.  Record that when the object
request gets created.

Update the I/O error warnings so they use this so what's reported
is more informative.

Rename a local variable to fit the convention used everywhere else.

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