tree 1cb3563cb83f80347dbc3e4bd30c4635d401e87a
parent 942eaabd5d77522223a311ed9bddaaa3cefde27d
author Horst Hummel <horst.hummel@de.ibm.com> 1125788278 -0700
committer Linus Torvalds <torvalds@evo.osdl.org> 1125903986 -0700

[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>