Messages in this thread | | | Date | Sun, 22 Sep 2013 13:00:05 -0400 | From | Tejun Heo <> | Subject | Re: [PATCH v2 2/2] elevator: acquire q->sysfs_lock in elevator_change() |
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On Fri, Aug 30, 2013 at 06:47:16PM -0400, Tomoki Sekiyama wrote: > Add locking of q->sysfs_lock into elevator_change() (an exported function) > to ensure it is held to protect q->elevator from elevator_init(), even if > elevator_change() is called from non-sysfs paths. > sysfs path (elv_iosched_store) uses __elevator_change(), non-locking > version, as the lock is already taken by elv_iosched_store(). > > Signed-off-by: Tomoki Sekiyama <tomoki.sekiyama@hds.com>
Acked-by: Tejun Heo <tj@kernel.org>
Thanks.
-- tejun
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