From: Alex Elder <elder@inktank.com>
Date: Mon, 11 Jun 2012 19:57:13 +0000 (-0500)
Subject: libceph: don't use bio_iter as a flag
X-Git-Tag: v3.6-rc1~36^2~94
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=abdaa6a849af1d63153682c11f5bbb22dacb1f6b;p=pandora-kernel.git

libceph: don't use bio_iter as a flag

Recently a bug was fixed in which the bio_iter field in a ceph
message was not being properly re-initialized when a message got
re-transmitted:
    commit 43643528cce60ca184fe8197efa8e8da7c89a037
    Author: Yan, Zheng <zheng.z.yan@intel.com>
    rbd: Clear ceph_msg->bio_iter for retransmitted message

We are now only initializing the bio_iter field when we are about to
start to write message data (in prepare_write_message_data()),
rather than every time we are attempting to write any portion of the
message data (in write_partial_msg_pages()).  This means we no
longer need to use the msg->bio_iter field as a flag.

So just don't do that any more.  Trust prepare_write_message_data()
to ensure msg->bio_iter is properly initialized, every time we are
about to begin writing (or re-writing) a message's bio data.

Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Sage Weil <sage@inktank.com>
---

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