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drbd: use the cached meta_dev_idx
authorLars Ellenberg <lars.ellenberg@linbit.com>
Tue, 19 Mar 2013 17:16:45 +0000 (18:16 +0100)
committerJens Axboe <axboe@kernel.dk>
Sat, 23 Mar 2013 00:13:59 +0000 (18:13 -0600)
Now we have the cached meta_dev_idx member,
we can get rid of a few rcu_read_lock() sections and rcu_dereference().

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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