From: Sebastian Ott <sebott@linux.vnet.ibm.com>
Date: Wed, 28 Jan 2015 17:44:17 +0000 (+0100)
Subject: s390/dasd: add locking for global_profile access
X-Git-Tag: fixes-v4.0-rc1~134^2~10
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8ea55c95c372a7a51fa50cb7c75240bfbe8bd337;p=pandora-kernel.git

s390/dasd: add locking for global_profile access

Access to DASDs global statistics is done without locking which
can lead to inconsistent data. Add locking to fix this. Also move
the relevant structs in a global dasd_profile struct.

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Reviewed-by: Stefan Haberland <stefan.haberland@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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