s390/dasd: hold request queue sysfs lock when calling elevator_init()

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"elevator: Fix a race in elevator switching and md device initialization"
changed the semantics of elevator_init() in a way that now enforces to hold
the corresponding request queue's sysfs_lock when calling elevator_init()
to fix a race.
The patch did not convert the s390 dasd device driver which is the only
device driver which also calls elevator_init(). So add the missing locking.

Cc: Tomoki Sekiyama <tomoki.sekiyama@hds.com>
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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This commit is contained in:

Heiko Carstens 2013-10-31 13:24:28 +01:00 • committed by Jens Axboe

parent b88fac630b

commit ef0899410f

1 changed files with 4 additions and 4 deletions

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drivers/s390/block/dasd.c

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