From: Ilya Dryomov <ilya.dryomov@inktank.com>
Date: Tue, 13 May 2014 07:19:26 +0000 (+0400)
Subject: libceph: mon_get_version request infrastructure
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~24^2~10
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=513a8243d67f8e8d27f2883bd2f18bc87c7ca376;p=pandora-kernel.git

libceph: mon_get_version request infrastructure

Add support for mon_get_version requests to libceph.  This reuses much
of the ceph_mon_generic_request infrastructure, with one exception.
Older OSDs don't set mon_get_version reply hdr->tid even if the
original request had a non-zero tid, which makes it impossible to
lookup ceph_mon_generic_request contexts by tid in get_generic_reply()
for such replies.  As a workaround, we allocate a reply message on the
reply path.  This can probably interfere with revoke, but I don't see
a better way.

Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com>
Reviewed-by: Sage Weil <sage@inktank.com>
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