| commit | 5f45c69589b7d2953584e6cd0b31e35dbe960ad0 | [log] [tgz] |
|---|---|---|
| author | Jens Axboe <jaxboe@fusionio.com> | Tue Apr 19 09:10:35 2011 +0200 |
| committer | Jens Axboe <jaxboe@fusionio.com> | Tue Apr 19 09:10:35 2011 +0200 |
| tree | 7f920cebcbbe6a1435975e355cee15289ddbc428 | |
| parent | bd900d4580107c899d43b262fbbd995f11097a43 [diff] |
cfq-iosched: read_lock() does not always imply rcu_read_lock() For some configurations of CONFIG_PREEMPT that is not true. So get rid of __call_for_each_cic() and always uses the explicitly rcu_read_lock() protected call_for_each_cic() instead. This fixes a potential bug related to IO scheduler removal or online switching. Thanks to Paul McKenney for clarifying this. Signed-off-by: Jens Axboe <jaxboe@fusionio.com>