From: Sage Weil <sage@newdream.net>
Date: Fri, 4 Mar 2011 20:24:28 +0000 (-0800)
Subject: libceph: fix msgr backoff
X-Git-Tag: v2.6.38-rc8~9^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=60bf8bf8815e6adea4c1d0423578c3b8000e2ec8;p=pandora-kernel.git

libceph: fix msgr backoff

With commit f363e45f we replaced a bunch of hacky workqueue mutual
exclusion logic with the WQ_NON_REENTRANT flag.  One pieces of fallout is
that the exponential backoff breaks in certain cases:

 * con_work attempts to connect.
 * we get an immediate failure, and the socket state change handler queues
   immediate work.
 * con_work calls con_fault, we decide to back off, but can't queue delayed
   work.

In this case, we add a BACKOFF bit to make con_work reschedule delayed work
next time it runs (which should be immediately).

Signed-off-by: Sage Weil <sage@newdream.net>
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