From: Horst Hummel <horst.hummel@de.ibm.com>
Date: Sat, 3 Sep 2005 22:57:58 +0000 (-0700)
Subject: [PATCH] s390: deadlock in dasd_devmap
X-Git-Tag: v2.6.14-rc1~785
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c6eb7b7703ac4b3401b74f411c8c51ded214bf19;p=pandora-kernel.git

[PATCH] s390: deadlock in dasd_devmap

Reintroduce a read-only copy of the devmap features in the device struct.
This is necessary to solve a deadlock on the dasd_devmap_lock which is
acquired by dasd_get_features called from the dasd tasklet.  The current
implementation of devmap doesn't allow to call any devmap function from
interrupt or softirq context.

Signed-off-by: Horst Hummel <horst.hummel@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

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