From: Stefan Haberland <stefan.haberland@de.ibm.com>
Date: Wed, 5 Jan 2011 11:48:05 +0000 (+0100)
Subject: [S390] dasd: Prevent deadlock during suspend/resume.
X-Git-Tag: v2.6.38-rc1~461^2~13
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6f272b9cec285a9610a2acf101f694bc58bed37e;p=pandora-kernel.git

[S390] dasd: Prevent deadlock during suspend/resume.

The freeze callback may set a stop bit so that a worker thread could
not start I/O. The discipline specific freeze function waits for the
worker to be completed.
Set the stop_bit after the discipline specific freeze function has
returned and no worker is running.

Signed-off-by: Stefan Haberland <stefan.haberland@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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